<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Calculations - Using Fresh air loads in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>Calculations - Using Fresh air loads in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database</link><pubDate>Thu, 20 Oct 2016 15:21:05 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Current Revision posted to Hevacomp Wiki by Duncan Brown on 10/20/2016 3:21:05 PM&lt;br /&gt;
&lt;p style="padding:0;margin:0;"&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td width="30%" style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;V8i (N/A)&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p style="text-align:justify;"&gt;The Design Database package contains a number of calculation modules that allow for the introduction of conditioned air into a space.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;table style="margin-right:auto;margin-left:auto;" border="0" cellspacing="1" cellpadding="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p&gt;The available options are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;No additional fresh air&lt;/li&gt;
&lt;li&gt;Fresh air introduced locally to rooms&lt;/li&gt;
&lt;li&gt;Conditioned primary fresh air&lt;/li&gt;
&lt;li&gt;Fresh air from central plant with conditioned air&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;These options relate to the following:&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg"&gt;&lt;img alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2&gt;No additional fresh air&lt;/h2&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg" border="0" /&gt;&lt;/a&gt;This option is for conditioning the room locally be means of fan coil units. Fresh air is not being introduced directly into the room, or at the main plant.&lt;/p&gt;
&lt;h2&gt;Fresh air introduced locally into rooms&lt;/h2&gt;
&lt;p style="text-align:justify;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg" border="0" /&gt;&lt;/a&gt;This option is for local conditioning via fan coils and the introduction of untreated air into the room.The untreated air could be introduced into the fan coil unit, directly into the room, or ceiling void.&lt;/p&gt;
&lt;h2&gt;Conditioned primary fresh air&lt;/h2&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for local cooling in the room (fan coil units) but also have a fresh air requirement that is being managed by central plant.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;The temperature of the primary fresh air must be specified. You can also set a humidity control for the primary fresh air if desired. The central plant will then be modeled based on the heating/cooling and humidify/dehumidify parameters.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;When considering this option, individual room load results will be affected as the cooling on the primary fresh air will be considered. The plant results will display&amp;nbsp; the fresh air conditioning loads.&lt;/p&gt;
&lt;h2&gt;Fresh air from central plant with conditioned air&lt;/h2&gt;
&lt;p style="text-align:center;"&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/Type_2D00_4.jpg"&gt;&lt;img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type_2D00_4.jpg" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for all the conditioning at central plant with no local cooling. This could either be by recirculation or a full fresh air system. The illustration shows a recirculation system where primary fresh air is mixed with recirculation air then cooled to the defined supply temperature before being introduced to the room. With this option, room loads will not be affected as there is no requirement for local conditioning. The total plant loads will increase to indicate the fresh air load being handled.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"&gt;&lt;img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /&gt;&lt;/a&gt;&lt;/h1&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Hevacomp Mechanical Designer, plant, Fresh Air Loads, design database, Room units&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/14</link><pubDate>Thu, 16 Jul 2015 14:47:57 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Stephen Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 14 posted to Hevacomp Wiki by Stephen Brown on 7/16/2015 2:47:57 PM&lt;br /&gt;
&lt;h1&gt;&lt;b&gt;&lt;img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /&gt;&lt;/b&gt;&lt;/h1&gt;
&lt;table style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;All&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p style="text-align:justify;"&gt;The Design Database package contains a number of calculation modules that allow for the introduction of conditioned air into a space.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;table style="margin-right:auto;margin-left:auto;" border="0" cellspacing="1" cellpadding="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p&gt;The available options are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;No additional fresh air&lt;/li&gt;
&lt;li&gt;Fresh air introduced locally to rooms&lt;/li&gt;
&lt;li&gt;Conditioned primary fresh air&lt;/li&gt;
&lt;li&gt;Fresh air from central plant with conditioned air&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;These options relate to the following:&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg"&gt;&lt;img alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h3&gt;No additional fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;This option is for conditioning the room locally be means of fan coil units. Fresh air is not being introduced directly into the room, or at the main plant.&lt;/p&gt;
&lt;h3&gt;Fresh air introduced locally into rooms&lt;/h3&gt;
&lt;p style="text-align:justify;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg" border="0" /&gt;&lt;/a&gt;This option is for local conditioning via fan coils and the introduction of untreated air into the room.The untreated air could be introduced into the fan coil unit, directly into the room, or ceiling void.&lt;/p&gt;
&lt;h3&gt;Conditioned primary fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for local cooling in the room (fan coil units) but also have a fresh air requirement that is being managed by central plant.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;The temperature of the primary fresh air must be specified. You can also set a humidity control for the primary fresh air if desired. The central plant will then be modeled based on the heating/cooling and humidify/dehumidify parameters.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;When considering this option, individual room load results will be affected as the cooling on the primary fresh air will be considered. The plant results will display&amp;nbsp; the fresh air conditioning loads.&lt;/p&gt;
&lt;h3&gt;Fresh air from central plant with conditioned air&lt;/h3&gt;
&lt;p style="text-align:center;"&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/Type_2D00_4.jpg"&gt;&lt;img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type_2D00_4.jpg" alt=" " /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for all the conditioning at central plant with no local cooling. This could either be by recirculation or a full fresh air system.&lt;br /&gt;&lt;br /&gt;The illustration shows a recirculation system where primary fresh air is mixed with recirculation air then cooled to the defined supply temperature before being introduced to the room.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;With this option, room loads will not be affected as there is no requirement for local conditioning. The total plant loads will increase to indicate the fresh air load being handled.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote, DDB, Hevacomp, Fresh Air Loads, design database&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/13</link><pubDate>Tue, 10 Mar 2015 11:49:22 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 13 posted to Hevacomp Wiki by Duncan Brown on 3/10/2015 11:49:22 AM&lt;br /&gt;
&lt;h1&gt;&lt;b&gt;&lt;img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /&gt;&lt;/b&gt;&lt;/h1&gt;
&lt;table style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;All&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p style="text-align:justify;"&gt;The Design Database package contains a number of calculation modules that allow for the introduction of conditioned air into a space.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;table style="margin-right:auto;margin-left:auto;" border="0" cellspacing="1" cellpadding="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p&gt;The available options are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;No additional fresh air&lt;/li&gt;
&lt;li&gt;Fresh air introduced locally to rooms&lt;/li&gt;
&lt;li&gt;Conditioned primary fresh air&lt;/li&gt;
&lt;li&gt;Fresh air from central plant with conditioned air&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;These options relate to the following:&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg"&gt;&lt;img alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h3&gt;No additional fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;This option is for conditioning the room locally be means of fan coil units. Fresh air is not being introduced directly into the room, or at the main plant.&lt;/p&gt;
&lt;h3&gt;Fresh air introduced locally into rooms&lt;/h3&gt;
&lt;p style="text-align:justify;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg" border="0" /&gt;&lt;/a&gt;This option is for local conditioning via fan coils and the introduction of untreated air into the room.The untreated air could be introduced into the fan coil unit, directly into the room, or ceiling void.&lt;/p&gt;
&lt;h3&gt;Conditioned primary fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for local cooling in the room (fan coil units) but also have a fresh air requirement that is being managed by central plant.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;The temperature of the primary fresh air must be specified. You can also set a humidity control for the primary fresh air if desired. The central plant will then be modeled based on the heating/cooling and humidify/dehumidify parameters.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;When considering this option, individual room load results will be affected as the cooling on the primary fresh air will be considered. The plant results will display&amp;nbsp; the fresh air conditioning loads.&lt;/p&gt;
&lt;h3&gt;Fresh air from central plant with conditioned air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for all the conditioning at central plant with no local cooling. This could either be by recirculation or a full fresh air system.&lt;br /&gt;&lt;br /&gt;The illustration shows a recirculation system where primary fresh air is mixed with recirculation air then cooled to the defined supply temperature before being introduced to the room.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;With this option, room loads will not be affected as there is no requirement for local conditioning. The total plant loads will increase to indicate the fresh air load being handled.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote, DDB, Hevacomp, Fresh Air Loads, design database&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/12</link><pubDate>Thu, 27 Nov 2014 15:46:38 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 12 posted to Hevacomp Wiki by Duncan Brown on 11/27/2014 3:46:38 PM&lt;br /&gt;
&lt;p&gt;&lt;b&gt;&lt;img width="189" height="60" style="border-width:0px;" alt=" " src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" /&gt;&lt;/b&gt;&lt;/p&gt;
&lt;table align="left" style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;All&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p style="text-align:justify;"&gt;The Design Database package contains a number of calculation modules that allow for the introduction of conditioned air into a space.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;table style="margin-right:auto;margin-left:auto;" border="0" cellspacing="1" cellpadding="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p&gt;The available options are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;No additional fresh air&lt;/li&gt;
&lt;li&gt;Fresh air introduced locally to rooms&lt;/li&gt;
&lt;li&gt;Conditioned primary fresh air&lt;/li&gt;
&lt;li&gt;Fresh air from central plant with conditioned air&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;These options relate to the following:&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg"&gt;&lt;img alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h3&gt;No additional fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;This option is for conditioning the room locally be means of fan coil units. Fresh air is not being introduced directly into the room, or at the main plant.&lt;/p&gt;
&lt;h3&gt;Fresh air introduced locally into rooms&lt;/h3&gt;
&lt;p style="text-align:justify;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg" border="0" /&gt;&lt;/a&gt;This option is for local conditioning via fan coils and the introduction of untreated air into the room.The untreated air could be introduced into the fan coil unit, directly into the room, or ceiling void.&lt;/p&gt;
&lt;h3&gt;Conditioned primary fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for local cooling in the room (fan coil units) but also have a fresh air requirement that is being managed by central plant.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;The temperature of the primary fresh air must be specified. You can also set a humidity control for the primary fresh air if desired. The central plant will then be modeled based on the heating/cooling and humidify/dehumidify parameters.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;When considering this option, individual room load results will be affected as the cooling on the primary fresh air will be considered. The plant results will display&amp;nbsp; the fresh air conditioning loads.&lt;/p&gt;
&lt;h3&gt;Fresh air from central plant with conditioned air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;This option is for all the conditioning at central plant with no local cooling. This could either be by recirculation or a full fresh air system.&lt;br /&gt;&lt;br /&gt;The illustration shows a recirculation system where primary fresh air is mixed with recirculation air then cooled to the defined supply temperature before being introduced to the room.&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;With this option, room loads will not be affected as there is no requirement for local conditioning. The total plant loads will increase to indicate the fresh air load being handled.&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote, DDB, Hevacomp, Fresh Air Loads, design database&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/11</link><pubDate>Mon, 04 Aug 2014 10:16:33 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 11 posted to Hevacomp Wiki by Duncan Brown on 8/4/2014 10:16:33 AM&lt;br /&gt;
&lt;p&gt;&lt;b&gt;&lt;img width="189" height="60" style="border-width:0px;" alt=" " src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" /&gt;&lt;/b&gt;&lt;/p&gt;
&lt;table align="left" style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;All&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;The Design Database package contains a number of calculation modules that allow for the introduction of conditioned air into a space.&lt;/span&gt;&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;table style="margin-right:auto;margin-left:auto;" border="0" cellspacing="1" cellpadding="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p&gt;&lt;span style="font-size:small;"&gt;The available options are:&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;span style="font-size:small;"&gt;No additional fresh air&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style="font-size:small;"&gt;Fresh air introduced locally to rooms&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style="font-size:small;"&gt;Conditioned primary fresh air&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style="font-size:small;"&gt;Fresh air from central plant with conditioned air&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/span&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;span style="font-size:small;"&gt;These options relate to the following:&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/span&gt;&lt;/p&gt;
&lt;/td&gt;
&lt;td&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg"&gt;&lt;img alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Image3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h3&gt;No additional fresh air&lt;/h3&gt;
&lt;p&gt;&lt;span style="font-size:small;"&gt;&lt;span style="font-size:small;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-1.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style="font-size:small;"&gt;This option is for conditioning the room locally be means of fan coil units. Fresh air is not being introduced directly into the room, or at the main plant.&lt;/span&gt;&lt;/p&gt;
&lt;h3&gt;&lt;span style="font-size:small;"&gt;Fresh air introduced locally into rooms&lt;/span&gt;&lt;/h3&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/type-2.jpg" border="0" /&gt;&lt;/a&gt;This option is for local conditioning via fan coils and the introduction of untreated air into the room.&lt;/span&gt;&lt;span style="font-size:small;"&gt;The untreated air could be introduced into the fan coil unit, directly into the room, or ceiling void.&lt;/span&gt;&lt;/p&gt;
&lt;h3&gt;Conditioned primary fresh air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-3.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;This option is for local cooling in the room (fan coil units) but also have a fresh air requirement that is being managed by central plant.&lt;/span&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;The temperature of the primary fresh air must be specified. You can also set a humidity control for the primary fresh air if desired. The central plant will then be modeled based on the heating/cooling and humidify/dehumidify parameters.&lt;/span&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;When considering this option, individual room load results will be affected as the cooling on the primary fresh air will be considered. The plant results will display&amp;nbsp; the fresh air conditioning loads.&lt;/span&gt;&lt;/p&gt;
&lt;h3&gt;Fresh air from central plant with conditioned air&lt;/h3&gt;
&lt;p&gt;&lt;a href="/cfs-file.ashx/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg"&gt;&lt;img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image.ashx/__size/690x0/__key/communityserver-wikis-components-files/00-00-00-00-18/Type-4.jpg" border="0" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;This option is for all the conditioning at central plant with no local cooling. This could either be by recirculation or a full fresh air system.&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:small;"&gt;The illustration shows a recirculation system where primary fresh air is mixed with recirculation air then cooled to the defined supply temperature before being introduced to the room.&lt;/span&gt;&lt;/p&gt;
&lt;p style="text-align:justify;"&gt;&lt;span style="font-size:small;"&gt;With this option, room loads will not be affected as there is no requirement for local conditioning. The total plant loads will increase to indicate the fresh air load being handled.&lt;/span&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote, DDB, Hevacomp, Fresh Air Loads, design database&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/10</link><pubDate>Mon, 24 Jun 2013 19:50:04 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Elisabeth Pry</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 10 posted to Hevacomp Wiki by Elisabeth Pry on 6/24/2013 7:50:04 PM&lt;br /&gt;
&lt;p&gt;&lt;b&gt;&lt;img style="border-width:0px;" alt="" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="189" height="60" /&gt;&lt;/b&gt;&lt;/p&gt;
&lt;table style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0" align="left"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To&amp;nbsp;&lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
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&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Hevacomp Mechanical Designer&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;All&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Environment:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Subarea:&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;N/A&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms.&amp;nbsp;The linked document below explains what these options mean.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;To view informaiton about the Fresh Air Loads options, click &lt;a href="/products/building/performance/m/building_performance_gallery/172084/download.aspx"&gt;here &lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote, DDB, Hevacomp, Fresh Air Loads, design database&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/9</link><pubDate>Tue, 17 Jul 2012 09:00:38 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 9 posted to Hevacomp Wiki by Duncan Brown on 7/17/2012 9:00:38 AM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img border="0" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="175" height="56" alt="" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms.&amp;nbsp;The linked document below explains what these options mean.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;To view informaiton about the Fresh Air Loads options, click &lt;a href="/products/building/performance/m/building_performance_gallery/172084/download.aspx"&gt;here &lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote DDB Design Database Fresh Air Loads&lt;/div&gt;
</description></item><item><title>How to use the Fresh air loads options in Design Database [TN]</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/8</link><pubDate>Tue, 17 Jul 2012 08:58:34 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 8 posted to Hevacomp Wiki by Duncan Brown on 7/17/2012 8:58:34 AM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img border="0" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="175" height="56" alt="" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms.&amp;nbsp;The linked document below explains what these options mean.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;To view informaiton about the Fresh Air Loads options, click &lt;a href="/products/building/performance/m/building_performance_gallery/172084/download.aspx"&gt;here &lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote DDB Design Database Fresh Air Loads&lt;/div&gt;
</description></item><item><title>Design Database - How to use the Fresh air loads options in Design Database [TN]</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/7</link><pubDate>Mon, 16 Jul 2012 10:46:10 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 7 posted to Hevacomp Wiki by Duncan Brown on 7/16/2012 10:46:10 AM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img border="0" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="175" height="56" alt="" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms.&amp;nbsp;The linked document below explains what these options mean.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;To view informaiton about the Fresh Air Loads options, click &lt;a href="/products/building/performance/m/building_performance_gallery/172084/download.aspx"&gt;here &lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote DDB Design Database Fresh Air Loads&lt;/div&gt;
</description></item><item><title>Design Database - How to use the Fresh air loads options in Design Database [TN]</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/6</link><pubDate>Fri, 20 May 2011 10:30:13 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Duncan Brown</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 6 posted to Hevacomp Wiki by Duncan Brown on 5/20/2011 10:30:13 AM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img height="56" width="175" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" border="0" alt="" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group &lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms.&amp;nbsp;The linked document below explains what these options mean.&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;To view informaiton about the Fresh Air Loads options, click &lt;a href="/products/building/performance/m/building_performance_gallery/172084/download.aspx"&gt;here &lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! &lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote DDB Design Database Fresh Air Loads&lt;/div&gt;
</description></item><item><title>What Do The Different Airflow Options Mean In Design Database [TN]</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/5</link><pubDate>Mon, 12 Jul 2010 15:06:43 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Elisa McGraw</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 5 posted to Hevacomp Wiki by Elisa McGraw on 7/12/2010 3:06:43 PM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img height="56" width="175" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" border="0" alt="" /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group &lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms. &lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;There are four options for Fresh air loads in the various heat gain programs: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19632/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;p&gt;These options relate to the following examples. &lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 1 - No Additional Fresh AIr&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Choose this option if you are conditioning the room locally by means of fan coil units and you are not introducing any fresh air into the room or at the main plant. For example: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19633/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 2 - Fresh Air Introduced Locally Into Rooms&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Use this option if you are conditioning the room locally by means of fan coil units and are also introducing untreated fresh air directly into the room. This could be directly onto the back of the fan coils or straight into the room or the ceiling void. For example: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19634/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 3 - Conditioned Primary Fresh AIr&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;This option should be used if you have local cooling in the room via fan coil units and where you also have a fresh air requirement that is being managed at your central plant. When you select this option you must set the supply temperature for the primary fresh air. You can also optionally set a humidity control for the primary fresh air. &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19635/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;p&gt;The central plant will then have to heat\cool and humidify\dehumidify the fresh air requirement based on the parameters you set.&lt;br /&gt;With this option the individual room load results will be affected, as the primary fresh air is already cooled at central plant and therefore reduces the load that local fan coils have to overcome. The plant results will show the fresh air conditioning loads required. &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 4 - Fresh Air From Central Plant With Conditioned Air&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Use this option if all of your conditioning is being performed at your central plant with no local cooling in the rooms. This could either be by a recirc or full fresh air system. The diagram below shows a recirc system where the primary fresh air is mixed with recirc air and then cooled to the defined supply temperature before being to the room. &lt;/p&gt;
&lt;p&gt;If this option is selected then the room loads will not be affected, as there is no requirement for conditioning of fresh air locally in the room. The total plant loads however will increase to take account of the fresh air load that is being handled. &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19665/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! &lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote&lt;/div&gt;
</description></item><item><title>What Do The Different Airflow Options Mean In Design Database [TN]</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/4</link><pubDate>Thu, 24 Jun 2010 15:22:42 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Elisa McGraw</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 4 posted to Hevacomp Wiki by Elisa McGraw on 6/24/2010 3:22:42 PM&lt;br /&gt;
&lt;p&gt;&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img height="80" width="250" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" border="0" alt="" /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Document Type:&lt;/strong&gt; TechNote&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Version(s):&lt;/strong&gt; All &lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group &lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms. &lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;There are four options for Fresh air loads in the various heat gain programs: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19632/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;p&gt;These options relate to the following examples. &lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 1 - No Additional Fresh AIr&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Choose this option if you are conditioning the room locally by means of fan coil units and you are not introducing any fresh air into the room or at the main plant. For example: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19633/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 2 - Fresh Air Introduced Locally Into Rooms&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Use this option if you are conditioning the room locally by means of fan coil units and are also introducing untreated fresh air directly into the room. This could be directly onto the back of the fan coils or straight into the room or the ceiling void. For example: &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19634/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 3 - Conditioned Primary Fresh AIr&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;This option should be used if you have local cooling in the room via fan coil units and where you also have a fresh air requirement that is being managed at your central plant. When you select this option you must set the supply temperature for the primary fresh air. You can also optionally set a humidity control for the primary fresh air. &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19635/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;p&gt;The central plant will then have to heat\cool and humidify\dehumidify the fresh air requirement based on the parameters you set.&lt;br /&gt;With this option the individual room load results will be affected, as the primary fresh air is already cooled at central plant and therefore reduces the load that local fan coils have to overcome. The plant results will show the fresh air conditioning loads required. &lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;strong&gt;Option 4 - Fresh Air From Central Plant With Conditioned Air&lt;/strong&gt; &lt;/p&gt;
&lt;p&gt;Use this option if all of your conditioning is being performed at your central plant with no local cooling in the rooms. This could either be by a recirc or full fresh air system. The diagram below shows a recirc system where the primary fresh air is mixed with recirc air and then cooled to the defined supply temperature before being to the room. &lt;/p&gt;
&lt;p&gt;If this option is selected then the room loads will not be affected, as there is no requirement for conditioning of fresh air locally in the room. The total plant loads however will increase to take account of the fresh air load that is being handled. &lt;/p&gt;
&lt;p&gt;&lt;img src="/photos/cosminpopovicis_images/images/19665/original.aspx" border="0" alt="" /&gt; &lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; &lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;Bentley&amp;#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! &lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: TechNote&lt;/div&gt;
</description></item><item><title>What Do The Different Airflow Options Mean In Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/3</link><pubDate>Thu, 13 Nov 2008 14:54:55 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Elisa McGraw</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 3 posted to Hevacomp Wiki by Elisa McGraw on 11/13/2008 2:54:55 PM&lt;br /&gt;
&lt;p&gt;
&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img src="http://communities.bentley.com/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" border="0" width="250" height="80" /&gt;&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Document Type:&lt;/strong&gt; FAQ 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Version(s):&lt;/strong&gt; All 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;
In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms. 
&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;
There are four options for Fresh air loads in the various heat gain programs: 
&lt;/p&gt;
&lt;p&gt;
&lt;img src="/photos/cosminpopovicis_images/images/19632/original.aspx" border="0" /&gt; 
&lt;/p&gt;
&lt;p&gt;
These options relate to the following examples. 
&lt;/p&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 1 - No Additional Fresh AIr&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Choose this option if you are conditioning the room locally by means of fan coil units and you are not introducing any fresh air into the room or at the main plant. For example: 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19633/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 2 - Fresh Air Introduced Locally Into Rooms&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if you are conditioning the room locally by means of fan coil units and are also introducing untreated fresh air directly into the room. This could be directly onto the back of the fan coils or straight into the room or the ceiling void. For example: 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19634/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 3 - Conditioned Primary Fresh AIr&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	This option should be used if you have local cooling in the room via fan coil units and where you also have a fresh air requirement that is being managed at your central plant. When you select this option you must set the supply temperature for the primary fresh air. You can also optionally set a humidity control for the primary fresh air. 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19635/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	The central plant will then have to heat\cool and humidify\dehumidify the fresh air requirement based on the parameters you set.&lt;br /&gt;
	With this option the individual room load results will be affected, as the primary fresh air is already cooled at central plant and therefore reduces the load that local fan coils have to overcome. The plant results will show the fresh air conditioning loads required. 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 4 - Fresh Air From Central Plant With Conditioned Air&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if all of your conditioning is being performed at your central plant with no local cooling in the rooms. This could either be by a recirc or full fresh air system. The diagram below shows a recirc system where the primary fresh air is mixed with recirc air and then cooled to the defined supply temperature before being to the room. 
	&lt;/p&gt;
	&lt;p&gt;
	If this option is selected then the room loads will not be affected, as there is no requirement for conditioning of fresh air locally in the room. The total plant loads however will increase to take account of the fresh air load that is being handled. 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19665/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;
&lt;a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx"&gt;Product TechNotes and FAQs&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx"&gt;Building Product TechNotes And FAQs&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;
Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;
Bentley's Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! 
&lt;/p&gt;
&lt;div style="clear:both;"&gt;&lt;/div&gt;
</description></item><item><title>What Do The Different Airflow Options Mean In Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/2</link><pubDate>Wed, 12 Nov 2008 20:17:39 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Cosmin Popovici</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 2 posted to Hevacomp Wiki by Cosmin Popovici on 11/12/2008 8:17:39 PM&lt;br /&gt;
&lt;p&gt;
&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img src="http://communities.bentley.com/files/storage/363/17560/TSG%20Logo.bmp" border="0" width="250" height="80" /&gt;&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Document Type:&lt;/strong&gt; FAQ 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Version(s):&lt;/strong&gt; All 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;
In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms. 
&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;
There are four options for Fresh air loads in the various heat gain programs: 
&lt;/p&gt;
&lt;p&gt;
&lt;img src="/photos/cosminpopovicis_images/images/19632/original.aspx" border="0" /&gt; 
&lt;/p&gt;
&lt;p&gt;
These options relate to the following examples. 
&lt;/p&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 1 - No Additional Fresh AIr&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Choose this option if you are conditioning the room locally by means of fan coil units and you are not introducing any fresh air into the room or at the main plant. For example: 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19633/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 2 - Fresh Air Introduced Locally Into Rooms&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if you are conditioning the room locally by means of fan coil units and are also introducing untreated fresh air directly into the room. This could be directly onto the back of the fan coils or straight into the room or the ceiling void. For example: 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19634/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 3 - Conditioned Primary Fresh AIr&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	This option should be used if you have local cooling in the room via fan coil units and where you also have a fresh air requirement that is being managed at your central plant. When you select this option you must set the supply temperature for the primary fresh air. You can also optionally set a humidity control for the primary fresh air. 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19635/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	The central plant will then have to heat\cool and humidify\dehumidify the fresh air requirement based on the parameters you set.&lt;br /&gt;
	With this option the individual room load results will be affected, as the primary fresh air is already cooled at central plant and therefore reduces the load that local fan coils have to overcome. The plant results will show the fresh air conditioning loads required. 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 4 - Fresh Air From Central Plant With Conditioned Air&lt;/strong&gt; 
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if all of your conditioning is being performed at your central plant with no local cooling in the rooms. This could either be by a recirc or full fresh air system. The diagram below shows a recirc system where the primary fresh air is mixed with recirc air and then cooled to the defined supply temperature before being to the room. 
	&lt;/p&gt;
	&lt;p&gt;
	If this option is selected then the room loads will not be affected, as there is no requirement for conditioning of fresh air locally in the room. The total plant loads however will increase to take account of the fresh air load that is being handled. 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19665/original.aspx" border="0" /&gt; 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;
[[Product TechNotes and FAQs]] 
&lt;/p&gt;
&lt;p&gt;
[[Building Product TechNotes And FAQs]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I convert my Version 18 Connect projects to Version 24]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I move my Connect custom reports to the new version]] 
&lt;/p&gt;
&lt;p&gt;
[[Why has Crystal Reports stopped functioning]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I calculate solar gain factors]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I create a template project]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I elevate roof points]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I specify an angle to south for CAD Input]] 
&lt;/p&gt;
&lt;p&gt;
[[What are the Lighting control - Daylight factors for in Room data]] 
&lt;/p&gt;
&lt;p&gt;
[[What do the different airflow options mean in Design Database]] 
&lt;/p&gt;
&lt;p&gt;
[[Why do my floors not line up in 3D view]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does Design Database tell me my project is a CAD project]] 
&lt;/p&gt;
&lt;p&gt;
[[How Do I Add My Company Logo To Hevacomp Printouts]]
&lt;/p&gt;
&lt;p&gt;
[[What hardware do I need to run the software]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I automatically roll out over a network]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does my installation generate a 1608 or 1628 error]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I modify my firewall settings in XP to allow the software to run]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I set up my licence server on a Novell network]] 
&lt;/p&gt;
&lt;p&gt;
[[What port does the Licence Manager use]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does the Licence Manager fail to restart on a server reboot]] 
&lt;/p&gt;
&lt;p&gt;
[[How are mains losses calculated in LPHW and CHW]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I add floor change connectors in Netsys]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I convert flow rates from loading units to litres per second]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I fix or unfix a vertical pipeduct section]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does NETSYS tell me my project is a CAD project]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I add wall-mounted luminaires in Nimbus]] 
&lt;/p&gt;
&lt;p&gt;
[[Why do my Lumen reports show NA]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I create a Summer Design Day based on the CIBSE Summer Design Year data]] 
&lt;/p&gt;
&lt;p&gt;
[[What is dynamic simulation]]
&lt;/p&gt;
&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;
Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;
Bentley's Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! 
&lt;/p&gt;
&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: &lt;tags&gt;&lt;/tags&gt;&lt;/div&gt;
</description></item><item><title>What Do The Different Airflow Options Mean In Design Database</title><link>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database/revision/1</link><pubDate>Wed, 12 Nov 2008 19:46:03 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fba1e210-3379-4a4a-a068-5a950f99ce4d</guid><dc:creator>Cosmin Popovici</dc:creator><comments>https://communities.bentley.com/products/building/performance/w/building_performance__wiki/2345/calculations-using-fresh-air-loads-in-design-database#comments</comments><description>Revision 1 posted to Hevacomp Wiki by Cosmin Popovici on 11/12/2008 7:46:03 PM&lt;br /&gt;
&lt;p&gt;
&lt;a href="http://selectservices.bentley.com/en-US"&gt;&lt;img src="http://communities.bentley.com/files/storage/363/17560/TSG%20Logo.bmp" border="0" width="250" height="80" /&gt;&lt;/a&gt;
&lt;/p&gt;
&lt;h1&gt;Document Information&lt;/h1&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Document Type:&lt;/strong&gt; FAQ 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Product(s):&lt;/strong&gt; Hevacomp Mechanical Designer 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Version(s):&lt;/strong&gt; All 
	&lt;/p&gt;
	&lt;p&gt;
	&lt;strong&gt;Original Author:&lt;/strong&gt; Bentley Technical Support Group 
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;
In the Design Database package, In the various heat gains programs, you can specify four different type of air loading for your rooms. 
&lt;/p&gt;
&lt;h1&gt;Method&lt;/h1&gt;
&lt;p&gt;
There are four options for Fresh air loads in the various heat gain programs:
&lt;/p&gt;
&lt;p&gt;
&lt;img src="/photos/cosminpopovicis_images/images/19632/original.aspx" border="0" /&gt;
&lt;/p&gt;
&lt;p&gt;
These options relate to the following examples.
&lt;/p&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 1 - No Additional Fresh AIr&lt;/strong&gt;
	&lt;/p&gt;
	&lt;p&gt;
	Choose this option if you are conditioning the room locally by means of fan coil units and you are not introducing any fresh air into the room or at the main plant. For example:
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19633/original.aspx" border="0" /&gt;
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 2 - Fresh Air Introduced Locally Into Rooms&lt;/strong&gt;
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if you are conditioning the room locally by means of fan coil units and are also introducing untreated fresh air directly into the room. This could be directly onto the back of the fan coils or straight into the room or the ceiling void. For example:
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19634/original.aspx" border="0" /&gt;
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 3 - Conditioned Primary Fresh AIr&lt;/strong&gt;
	&lt;/p&gt;
	&lt;p&gt;
	This option should be used if you have local cooling in the room via fan coil units and where you also have a fresh air requirement that is being managed at your central plant. When you select this option you must set the supply temperature for the primary fresh air. You can also optionally set a humidity control for the primary fresh air.
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19635/original.aspx" border="0" /&gt;
	&lt;/p&gt;
	&lt;p&gt;
	The central plant will then have to heat\cool and humidify\dehumidify the fresh air requirement based on the parameters you set.&lt;br /&gt;
	With this option the individual room load results will be affected, as the primary fresh air is already cooled at central plant and therefore reduces the load that local fan coils have to overcome. The plant results will show the fresh air conditioning loads required.
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
	&lt;p&gt;
	&lt;strong&gt;Option 4 - Fresh Air From Central Plant With Conditioned Air&lt;/strong&gt;
	&lt;/p&gt;
	&lt;p&gt;
	Use this option if all of your conditioning is being performed at your central plant with no local cooling in the rooms. This could either be by a recirc or full fresh air system. The diagram below shows a recirc system where the primary fresh air is mixed with recirc air and then cooled to the defined supply temperature before being to the room.
	&lt;/p&gt;
	&lt;p&gt;
	If this option is selected then the room loads will not be affected, as there is no requirement for conditioning of fresh air locally in the room. The total plant loads however will increase to take account of the fresh air load that is being handled.
	&lt;/p&gt;
	&lt;p&gt;
	&lt;img src="/photos/cosminpopovicis_images/images/19665/original.aspx" border="0" /&gt;
	&lt;/p&gt;
&lt;/blockquote&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p&gt;
[[Product TechNotes and FAQs]] 
&lt;/p&gt;
&lt;p&gt;
[[Building Product TechNotes And FAQs]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I convert my Version 18 Connect projects to Version 24]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I move my Connect custom reports to the new version]] 
&lt;/p&gt;
&lt;p&gt;
[[Why has Crystal Reports stopped functioning]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I calculate solar gain factors]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I create a template project]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I elevate roof points]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I specify an angle to south for CAD Input]] 
&lt;/p&gt;
&lt;p&gt;
[[What are the Lighting control - Daylight factors for in Room data]] 
&lt;/p&gt;
&lt;p&gt;
[[What do the different airflow options mean in Design Database]] 
&lt;/p&gt;
&lt;p&gt;
[[Why do my floors not line up in 3D view]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does Design Database tell me my project is a CAD project]] 
&lt;/p&gt;
&lt;p&gt;
[[What hardware do I need to run the software]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I automatically roll out over a network]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does my installation generate a 1608 or 1628 error]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I modify my firewall settings in XP to allow the software to run]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I set up my licence server on a Novell network]] 
&lt;/p&gt;
&lt;p&gt;
[[What port does the Licence Manager use]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does the Licence Manager fail to restart on a server reboot]] 
&lt;/p&gt;
&lt;p&gt;
[[How are mains losses calculated in LPHW and CHW]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I add floor change connectors in Netsys]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I convert flow rates from loading units to litres per second]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I fix or unfix a vertical pipeduct section]] 
&lt;/p&gt;
&lt;p&gt;
[[Why does NETSYS tell me my project is a CAD project]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I add wall-mounted luminaires in Nimbus]] 
&lt;/p&gt;
&lt;p&gt;
[[Why do my Lumen reports show NA]] 
&lt;/p&gt;
&lt;p&gt;
[[How do I create a Summer Design Day based on the CIBSE Summer Design Year data]] 
&lt;/p&gt;
&lt;p&gt;
[[What is dynamic simulation]]
&lt;/p&gt;
&lt;h1&gt;External Links&lt;/h1&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/"&gt;Bentley homepage&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/"&gt;HevacompMechanical Designer&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://appsnet.bentley.com/kbase/"&gt;Bentley Technical Support KnowledgeBase&lt;/a&gt; 
&lt;/p&gt;
&lt;p&gt;
&lt;a href="http://lms.bentley.com/"&gt;Bentley LEARN Server&lt;/a&gt; 
&lt;/p&gt;
&lt;h1&gt;&lt;br /&gt;
Comments or Corrections?&lt;/h1&gt;
&lt;p&gt;
Bentley's Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &amp;quot;Comments or Corrections?&amp;quot; section. THANK YOU! 
&lt;/p&gt;
&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: &lt;tags&gt;&lt;/tags&gt;&lt;/div&gt;
</description></item></channel></rss>