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Hevacomp Wiki Glazing Data
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    • +Hevacomp General Information
    • +Hevacomp Dynamic Simulation
    • +Hevacomp Electrical Designer
    • -Hevacomp Mechanical Designer
      • -Design Database - Hevacomp Mechanical Designer
        • Assigning Windcatchers through Flowpath Data
        • CAD mode and Room data mode
        • CAD Model Design - Adding atrium style spaces to a project
        • CAD Model Design - Adding different roof section types
        • CAD Model Design - Changing Floor Heights
        • CAD Model Design - Considering split level floors?
        • CAD Model Design - Deleting roofs
        • CAD Model Design - Elevating roofs using Roof Points
        • CAD Model Design - Gap Between Roof And Walls
        • CAD Model Design - How to specify an Angle to South
        • CAD Model Design - optimising the model
        • CAD Model Design - Roof changes not reflected in model
        • CAD Model design - Window is too small
        • Calculations - Occupancy and heat gains
        • Calculations - Using Fresh air loads in Design Database
        • CIBSE Gain calculation - Allowing temperatures to rise
        • CIBSE Gain calculation - Importance of accurate input data
        • CIBSE Gain Calculation - Load types
        • CIBSE Gain calculation - Solar gains at night
        • CIBSE Gain calculation - Why are there blank lines in my Gain results?
        • CIBSE Gain Calculation - Why does the graph show double the table results?
        • Creating a template project
        • Daylight Calculations in Design Database
        • Defining lighting control and daylight factors for Design Simulation calculations
        • Design Database hangs after opening project, or "Timeout accessing the database" error occurs
        • Displaying Building Input Data
        • DXF Import - Changing a DXF drawing
        • DXF Import - Re-aligning Rooms and DXF outline
        • DXF Import issues - 3D floors misaligned
        • DXF Import issues - Auto defining rooms
        • DXF Import issues - Drawing is inverted
        • DXF Import Issues - Drawing is too large error
        • DXF Import issues - Lines are missing from drawing
        • Editing project data - Default Data vs Global Change
        • Energy Calculation - HWS and occupancy
        • Energy Calculation - HWS demand
        • Error 380 in Global Change
        • General - Design Database - Hevacomp Mechanical Designer
        • Glazing Data
        • Glazing Data - Additional glazing is available
        • Glazing Data - How Do I Calculate Solar Gain Factors
        • Heat Loss Calculation - How to allow for a margin
        • Heat Loss Calculation - Showing Preheat Times
        • How to enter custom Materials in Fabric Data
        • How to import a gbXML file
        • How to incorporate external fins and shading in a calculation
        • How to place rooms within rooms
        • How to use Room Multipliers
        • Room Not Found In Database Error
      • +Mechanical Design - Hevacomp Mechanical Designer
      • +Netsys - Hevacomp Mechanical Designer
      • +PartL - Hevacomp Mechanical Designer
      • +System Builder - Hevacomp Mechanical Design
    • +Installation and activation
    • +Troubleshooting
    • +Windows tips and tricks
    • Working From Home with Hevacomp

     
     Questions about this article, topic, or product? Click here. 

    Glazing Data

      Product(s): Hevacomp Mechanical Designer
      Version(s): V8i (N/A)
      Environment: N/A
      Area: N/A
      Subarea: N/A

    Introduction

    The Glazing Data menu in Design Database contains a comprehensive array of glazing data that is used by the various Hevacomp Calculations.

    Glazing Data

    While we would strongly suggest filling in all the data for each glazing type, you should recognise that the menu is split into three areas as highlighted below. The red sections data is used solely by Design Database for steady state calculations, and the blue sections are used by Simulator for dynamic simulations, the green section is used by Simulator AND the PartL program but is NOT considered in the other Design Database calculations.

    Data for Design Database Calculations

    • The U value, light transmission, shading coefficient and SHGC figures should be obtained from the glazing manufacturer. Bentley Systems Ltd cannot provide these figures.
    • If the glazing manufacturer is unable to provide Solar Gain Factors, advice on computing these can be found in this wiki article.
    • If you wish to modify glazing data to incorporate a blind for all Design Database calculations EXCEPT PartL then you need to modify this data.

    Some detailed information about light transmission can be found here.

    Some detailed information on the relation between Shading coefficients and SHGC can be found here.

    Data for Simulation and PartL Calculations

    PartL considers different data to the Steady State calculations. One of the options you can specify for glazing in PartL is a blind type. the PartL program will take the blind specification directly from this field within the Glazing Data.  This data will also be used in Simulation calculations.

      
    Note: Selecting this blind type will have no effect on the other Design Database calculations. To effect the other Design Database calculations you must adjust the Glazing Properties section accordingly.

    Data for Simulations

    U and G values are often the only figures provided for glazing requirements during the early stages of a building’s design. However, please note that these U and G values cannot simply be entered manually into the glazing data menu; rather they are subsequently calculated upon entering the complete glazing construction. The Simulations use this construction data so all of the following must be defined:

    • Glazing Type, Blind Type and Material Type  – these determine the data fields available in the ‘Layer Data’ section.
    • Layer Data  – specifying glass type, and the properties of the space between panes
    • Clicking on Calculate will update the U and G values, should any changes have been made to the glazing construction. Please note this should be done whenever any changes are made.
    • The Change Data button should be clicked when the final glazing construction meets your requirements.

    Should you wish to view, edit or add a new glass type, then you will need to click on Glass Database. Likewise, the Blind types can be viewed or edited by clicking on Blinds Database. Using the existing data would be recommended, unless you have very specific data available from the glazing manufacturer.

    • design
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    • TechNote
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    • More
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    • Shane Regan Created by Bentley Colleague Shane Regan
    • When: Tue, Oct 22 2013 11:23 AM
    • Duncan Brown Last revision by Duncan Brown
    • When: Thu, Sep 14 2017 11:49 AM
    • Revisions: 17
    • Comments: 0
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