Ashrae 90.1 pdf 2010 lighting
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EnergyPlus uses these factors to generate equivalent layered constructions behind the scenes. These are different from conventional layered construction in that they don't use layers of materials but instead the overall thermal properties are defined as an F-factor (for slab on grade floors) or a C-factor (for below grade walls). Two special opaque construction types required by the ASHRAE 90.1 Standard, are F-factor ground floors and C-factor below-grade walls.
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When a site is created or when the climate zone is changed, baseline constructions and glazing systems as well as construction templates are generated for the selected ASHRAE climate zone ready for assigning to the building. Tools will be provided in future v4 releases to generate baseline building automatically from the proposed building so that both proposed and baseline buildings are stored in the same dsb file for an easy comparison of simulation inputs and outputs. Following formal ASHRAE 90.1 PRM modelling procedure, you are strongly advised to create the proposed building first and to create the baseline building from that.DesignBuilder does not currently generate different settings based on this selection, however it always generates baseline constructions and construction templates in accordance to building envelope requirements defined in 90.1 Constructions from Standard chapter 5 (detailed in Tables 5.5-1 through 5.5-8) can be selected as required for both proposed and baseline buildings.įor your proposed design you can improve the baseline construction (by copying and editing) or simply replacing them with definitions shown on architectural drawings or as built for existing building envelopes.
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On the Add new building dialog you can select either 1-Proposed or 2-Baseline for the ASHRAE 90.1 building type.This loads some appropriate model data settings such as Detailed HVAC and 6 timesteps per hour to the building model.