EnergyPlus, Method of introducing outside air using "OutdoorAirUnit"

asked 2025-07-01 02:38:08 -0500

Jung's avatar

updated 2025-07-01 09:28:45 -0500

I am using EnergyPlus and have used OutdoorAirUnit. I want to introduce outdoor air through OutdoorAirUnit to each space without heating or cooling it. I applied OutdoorAirUnit to each floor from the 1st floor to the 4th floor, and saw the results in Output:Variable as Zone outdoorAir unit air mass Flow Rate. However, the results show that mass flow rate is only occurring on the first floor, while the mass flow rate for floors 2 through 4 is calculated as 0. I have configured the nodes and the outdoorair:node separately for each floor, and the settings for floors 2 through 4 are identical to those on the first floor, but I am unsure why the results are showing 0.

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Comments

@Jung can you upload your model to Google Drive, Dropbox, etc. and then share a URL for others to download? That would help others provide better solutions.

Aaron Boranian's avatar Aaron Boranian  ( 2025-07-01 09:29:14 -0500 )edit

https://www.dropbox.com/scl/fi/sg06rb... here is the Dropbox url to linked my EnergyPlus idf file. Thanks for solutions

Jung's avatar Jung  ( 2025-07-01 20:35:39 -0500 )edit