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Energy plus results - total building area different total from schedules

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feg28
187 Aufrufe, 2 Antworten

Energy plus results - total building area different total from schedules

Hello everyone,

I am slowly learning how to use EnergyPlus through Revit. 

One error I can't seem to figure out is the fact that the total building area is different from the one I modeled when I get the EnergyPlus report, (see attached picture - I calculated the area from the rooms list and I attached the results of E+ where the area is shown). Is any of you having the same issue? Is that explainable somehow? 

 

All rooms are conditioned and using the same VAV system. 

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theslacollier
als Antwort auf: feg28

When using EnergyPlus through Revit, discrepancies between the modeled building area and the area reported in EnergyPlus can occur due to several reasons. Here are some common factors that might explain the difference:

Modeling Assumptions:

EnergyPlus might use different assumptions for calculating areas, such as including or excluding specific spaces (e.g., unconditioned spaces, plenum spaces) that are not part of your room list in Revit.
Space vs. Room:

Ensure you use "Spaces" in Revit for energy analysis rather than "Rooms." Spaces are designed explicitly for energy analysis and might have different boundaries and calculations than Rooms.
Boundary Conditions:

Check the boundary conditions and settings in Revit's energy settings. Incorrect boundary conditions can lead to discrepancies in area calculations.
Geometry Simplification:

EnergyPlus might simplify the geometry for analysis purposes, which can lead to differences in reported areas. This simplification is often necessary for computational efficiency.
Units and Conversions:

Ensure that the units used in Revit and EnergyPlus are consistent. Unit conversion errors can sometimes lead to discrepancies in reported areas.
Analytical Model:

Review the analytical model generated by Revit for energy analysis. Ensure it accurately represents the physical model, as discrepancies can affect the results.
Software Version and Settings:

Different versions of Revit and EnergyPlus might handle energy analysis differently. Ensure that you use compatible versions and that your settings are correctly configured.
To troubleshoot this issue, you can:

Double-check the settings and parameters in both Revit and EnergyPlus.
Compare the analytical model with the physical model to ensure accuracy.
Consult the documentation for both Revit and EnergyPlus to understand how areas are calculated.


RVT to the max
Nachricht 3 von 3
handjonathan
als Antwort auf: feg28

Hi @feg28 

Thanks a lot for posting your question to the forums!   Has the solution suggested by @theslacollier helped with your issue?

We look forward to hearing back from you with more information so we can help you as a community! 



Jonathan Hand


Industry Community Manager | AEC (Architecture & Building)

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