https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-resultsen-USTelligent Community 12https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-resultsMon, 14 Mar 2022 23:28:19 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:7a89d3d4-5d60-443a-9d08-a9acde5a70e1Steve Cocchihttps://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results#commentsCurrent Revision posted to OpenBuildings | AECOsim | Speedikon Wiki by Steve Cocchi on 3/14/2022 11:28:19 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><strong>Product(s):</strong></td> <td>OpenBuildings Energy Simulator</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>CONNECT Edition</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>Calculations</td> <td></td> </tr> </tbody> </table> <h1>Overview</h1> <p>The steadystate Heat Loss calculation includes results on&nbsp;Preheat Periods and Plant Ratios. This article details where the specific hours shown arise from, and why they may not appear on your results.</p> <p></p> <h1>Method</h1> <p style="text-align:justify;"></p> <p><span>Preheat Periods and Plant Ratio results</span>&nbsp;will always be enabled in results by default,<span>&nbsp;</span><strong>if it is applicable to the rooms that are being calculated</strong>.&nbsp;</p> <div class="content"> <p>The pre-heat times displayed are based on the occupancy schedules selected for the room(s) in question - eg if your rooms are set to be occupied for 24 hours a day then there will be no possibility to preheat prior to occupancy.</p> <p>Taking one room for example:</p> <ul> <li><span style="text-decoration:underline;"><strong>24 hour - no preheat possible:</strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/1280x480/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622708883v1.png" /></p> <p></p> <ul> <li><span><strong><span style="text-decoration:underline;">O<strong>ffice (Occ</strong>upied from 8am) - preheat shown until then:</span></strong></span></li> </ul> <p></p> <div><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/1280x960/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622774213v2.png" /></div> </div> <div class="signature"> <p><span>&nbsp;</span></p> </div> <p></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-17/5850.NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: Preheat, OpenBuildings Energy Simulator, Heat loss</div> https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results/revision/3Wed, 23 Feb 2022 13:26:20 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:7a89d3d4-5d60-443a-9d08-a9acde5a70e1Shane Reganhttps://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results#commentsRevision 3 posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 2/23/2022 1:26:20 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><strong>Product(s):</strong></td> <td>OpenBuildings Energy Simulator</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>CONNECT Edition</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>Calculations</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:</strong></td> <td>N/A</td> <td></td> </tr> </tbody> </table> <h1>Overview</h1> <p>The steadystate Heat Loss calculation includes results on&nbsp;Preheat Periods and Plant Ratios. This article details where the specific hours shown arise from, and why they may not appear on your results.</p> <p></p> <h1>Method</h1> <p style="text-align:justify;"></p> <p><span>Preheat Periods and Plant Ratio results</span>&nbsp;will always be enabled in results by default,<span>&nbsp;</span><strong>if it is applicable to the rooms that are being calculated</strong>.&nbsp;</p> <div class="content"> <p>The pre-heat times displayed are based on the occupancy schedules selected for the room(s) in question - eg if your rooms are set to be occupied for 24 hours a day then there will be no possibility to preheat prior to occupancy.</p> <p>Taking one room for example:</p> <ul> <li><span style="text-decoration:underline;"><strong>24 hour - no preheat possible:</strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/1280x480/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622708883v1.png" /></p> <p></p> <ul> <li><span><strong><span style="text-decoration:underline;">O<strong>ffice (Occ</strong>upied from 8am) - preheat shown until then:</span></strong></span></li> </ul> <p></p> <div><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/1280x960/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622774213v2.png" /></div> </div> <div class="signature"> <p><span>&nbsp;</span></p> </div> <p></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-17/5850.NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: Preheat, OpenBuildings Energy Simulator, Heat loss</div> https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results/revision/2Wed, 23 Feb 2022 13:24:20 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:7a89d3d4-5d60-443a-9d08-a9acde5a70e1Shane Reganhttps://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results#commentsRevision 2 posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 2/23/2022 1:24:20 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><strong>Product(s):</strong></td> <td>OpenBuildings Energy Simulator</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>CONNECT Edition</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>Calculations</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:</strong></td> <td>N/A</td> <td></td> </tr> </tbody> </table> <h1>Overview</h1> <p>The steadystate Heat Loss calculation includes results on&nbsp;Preheat Periods and Plant Ratios. This article details where the specific hours shown arise from, and why they may not appear on your results.</p> <p></p> <h1>Method</h1> <p style="text-align:justify;"></p> <p><span>Preheat Periods and Plant Ratio results</span>&nbsp;will always be enabled in results by default,<span>&nbsp;</span><strong>if it is applicable to the rooms that are being calculated</strong>.&nbsp;</p> <div class="content"> <p>The pre-heat times displayed are based on the occupancy schedules selected for the room(s) in question - eg if your rooms are set to be occupied for 24 hours a day then there will be no possibility to preheat prior to occupancy.</p> <p>Taking one room for example:</p> <ul> <li><span style="text-decoration:underline;"><strong>24 hour - no preheat possible:</strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/640x240/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622468176v1.png" /></p> <p></p> <ul> <li><span><strong><span style="text-decoration:underline;">O<strong>ffice (Occ</strong>upied from 8am) - preheat shown until then:</span></strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/640x240/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622468176v2.png" /></p> <div></div> </div> <div class="signature"> <p><span>&nbsp;</span></p> </div> <p></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-17/5850.NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: Preheat, OpenBuildings Energy Simulator, Heat loss</div> https://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results/revision/1Wed, 23 Feb 2022 13:23:56 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:7a89d3d4-5d60-443a-9d08-a9acde5a70e1Shane Reganhttps://communities.bentley.com/products/building/building_analysis___design/w/building_analysis_and_design__wiki/58451/heat-loss---preheat-period-and-plant-ratio-results#commentsRevision 1 posted to OpenBuildings | AECOsim | Speedikon Wiki by Shane Regan on 2/23/2022 1:23:56 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><strong>Product(s):</strong></td> <td>OpenBuildings Energy Simulator</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>CONNECT Edition</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>Calculations</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:</strong></td> <td>N/A</td> <td></td> </tr> </tbody> </table> <h1>Overview</h1> <p>The steadystate Heat Loss calculation includes results on&nbsp;Preheat Periods and Plant Ratios. This article details where the specific hours shown arise from, and why they may not appear on your results.</p> <p></p> <h1>Method</h1> <p style="text-align:justify;"></p> <p><span>Preheat Periods and Plant Ratio results</span>&nbsp;will always be enabled in results by default,<span>&nbsp;</span><strong>if it is applicable to the rooms that are being calculated</strong>.&nbsp;</p> <div class="content"> <p>The pre-heat times displayed are based on the occupancy schedules selected for the room(s) in question - eg if your rooms are set to be occupied for 24 hours a day then there will be no possibility to preheat prior to occupancy.</p> <p>Taking one room for example:</p> <ul> <li><span style="text-decoration:underline;"><strong>24 hour - no preheat possible:</strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/640x240/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622468176v1.png" /></p> <p></p> <ul> <li><span>O<strong><span style="text-decoration:underline;">ffice (Occupied from 8am) - preheat shown until then:</span></strong></span></li> </ul> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/640x240/__key/communityserver-wikis-components-files/00-00-00-00-17/pastedimage1645622468176v2.png" /></p> <div></div> </div> <div class="signature"> <p><span>&nbsp;</span></p> </div> <p></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-17/5850.NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: Preheat, OpenBuildings Energy Simulator, Heat loss</div>