9.1.D Setting Building Element Thermal Properties

Workflow

Demo

Practice Exercise (Optional)

• Generate Insights using Conceptual Types to set the thermal properties.
• Open the 3D Energy Model view.
• The File: Save As tool to save a new model and name it Setting Thermal Properties - Conceptual.
• Set the Energy Settings to use Conceptual Types:
• Open the Energy Setting tool.
• Set the Mode to Building Elements.
• Set the Advanced options for more accurate analysis:
• Set the Building Type to Office.
• Verify that no Schematic Types have the override checkbox turned on.
• Verify that the Detailed Elements checkbox is turned off.
• Click OK twice to close the Energy Settings dialogs.
• Create the Energy Analytical Model.Generate Insights for this model.
• Generate Insights using Schematics Types to set the thermal properties.
• Open the 3D Energy Model view.
• The File: Save As tool to save a new model and name it Setting Thermal Properties - Schematic.
• Set the Energy Settings to use Schematic Types:
• Open the Energy Setting tool.
• Set the Mode to Building Elements.
• Set the Advanced options for more accurate analysis:
• Set the Building Type to Office.
• Click the “...” button at the right end of the Schematic Types cell to open the Schematic types dialog.
• Override the Exterior Walls category to use the Analytic Construction named R-21 wood frame wall (U=0.0514).
• Override the Exterior Windows category to use the Analytic Construction named Double glazing - 1/4 in thick - gray/low-E (e = 0.2) glass (U=0.3500, SHGC=0.39).
• Verify that the Detailed Elements checkbox is turned off.
• Click OK twice to close the Energy Settings dialogs.
• Create the Energy Analytical Model.
• Generate Insights for this model.
• Generate Insights using Detailed Elements to set the thermal properties.
• Open the 3D Energy Model view.
• The File: Save As tool to save a new model and name it Setting Thermal Properties - Detailed.
• Select one of the exterior walls and edit the structure for the Exterior - EIFS on Mtl Stud type to increase the thickness of the EIFS - Exterior Insulation and Finish System layer to 0’-4”, resulting in a Resistance (R) value of 28.9565.
• Select one of the Casement Triple: 120” x 60” windows and edit this window type to use the Analytic Construction named Double glazing - 1/4 in thick - gray/low-E (e = 0.1) glass.
• Select one of the Casement Triple: 96” x 60” windows and edit this window type to use the Analytic Construction named Double glazing - 1/4 in thick - gray/low-E (e = 0.1) glass.
• Select one of the curtain wall glazed panels and edit the System Panel:Glazed type to use the Analytic Construction named Double glazing - 1/4 in thick - gray/low-E (e = 0.1) glass.
• Set the Energy Settings to use Detailed Elements:
• Open the Energy Setting tool.
• Set the Mode to Building Elements.
• Set the Advanced options for more accurate analysis:
• Set the Building Type to Office.
• Verify that the Detailed Elements checkbox is turned on.
• Click OK twice to close the Energy Settings dialogs.
• Create the Energy Analytical Model.
• Generate Insights for this model.
• Open the Insight interface and narrow the range of values included for this model to include only the BIM model value for the Wall Construction and Window Glazing factor tiles.
• Compare the predicted energy performance using three different approaches to assigning element thermal properties.