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RE: [EnergyPlus_Support] Limitations in Number of Zones?

I modeled a project with more than 500 thermal zones. The problem its not energy plus, its open studio. To open my model in open studio it will be necessary 2 hours.....!!! So I can recommended you to simplify your model.
R&D Engineer
Elithis Group

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jim@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 28 Mar 2011 12:13:50 -0400
Subject: RE: [EnergyPlus_Support] Limitations in Number of Zones?


Dear Vladimir,


While I do not know the exact number (I think it?s a lot higher than 200), I doubt that you really want to model that many zones without a very good reason.  Keep in mind that zoning in EnergyPlus, or any modeling program, should be selected because of considerations for function and scheduling, solar exposure, and HVAC system type, not by room configuration.


The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653


From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of bajic.vladimir
Sent: Monday, March 28, 2011 12:02 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Limitations in Number of Zones?



Does anybody know and have the experience with the maximum number of zones(ballpark) that you can model with Energy Plus.

I did all of my energy modeling with DOE2.1E and that number in DOE2.1E is somewhere from 100 up to 200 depending on the number different system types and in general the complexity of the energy model input.

Thank you in advance,



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