We're going to be making this even better but there are some limitations on what measures are fully mapped. Our goal is to make this 100% automated so comments and questions are appreciated!
The .osm file is provided as-is and you will need to closely check all the inputs in OpenStudio. We have done our homework, but it is the engineer’s responsibility for the accuracy, completeness, or usefulness of the data within the model. Questions and support on OpenStudio need to be answered by the NREL team (we are not affiliated with OpenStudio). We will be upgrading the capabilities of this export, so we will update, revise or otherwise change the data exported in the .osm file from time to time. Documentation will be updated when that happens. Once it leaves our system to OpenStudio we cannot guarantee or endorse the results generated using the .osm file. You will want a licensed engineer or qualified energy modeler to check the results before using them.
Parameters Mapped:
Roof R-Value | Envelope Heat Capacity |
Wall R-Value | Wall Emissivity |
Glazing U-Value | Ground Floor Area |
Glazing SHGC | Fan flow control factor |
Skylight SHGC | Daylight Sensors |
Occupancy Sensors | Integrated Part Load Value |
Lighting | Total Occupants (Occupied Hours) |
Lighting (Unoccu. Hrs) | Infiltration |
Exterior Lighting Power (Watts) | Ventilation Control |
Appliance Use | Solar Panel Surface Area, Solar Panel Module Location, Solar Panel Module Type |
Appliance Use (Unoccu.) | Occupancy Schedule (Applied to People, Lighting, and Equipment) |
DHW Gen, Hot water distribution system | Heating/Cooling Setpoints |
Heat Recovery System |
Parameters you will need to edit in OpenStudio:
System Type (Default is set at 'VAV w/Gas Boiler and Water Cooled Chiller' which can be altered based on the project)
Electricity/Gas Utility rate - manually input these values
Schedules for lighting and equipment should be further edited if different from the 'Occupancy' schedule.
SHW Collector - Functionality unavailable
Metabolic Rate - Assigned based on the building type
Blinds/Curtains/Shades - Customize the shading types inside OpenStudio
Ground Floor and Below grade values - Customize these values
Ventilation type - Based on System type selection
People Outdoor Air rate/ Area Outdoor air rate - Autosized based on ASHRAE 62.1
Domestic Hot water demand - Autosized based on people and schedules
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