[Equest-users] equest and energy plus outputs

[Joe Huang]

I was involved in a two year project 2005-2007 to convert the Calif. 
Energy Commission's Title-24 certification suite of building tests from 
DOE-2.1E to EnergyPlus.  There are some areas where it's difficult to 
get comparable inputs due to differences or limitations in the models. 
The differences between the two programs varied a lot depending on the 
building, weather, and HVAC system. For the CEC certification suite of 
160 runs, cooling results were more consistent, within 10% in most 
cases, with EnergyPlus almost always on the high side; for heating, the 
differences were much greater, sometimes with EnergyPlus being 40-60% 
lower than DOE-2.1E.  I have a 120-page report on this comparison, but 
haven't bothered to put it on the Web.

Joe

Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
www.whiteboxtechnologies.com
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"



deepika khowal wrote:
> HI All
> I am trying to create same model in equest and energy plus to see 
> whether i see same results and just to validate my simulation files.
> has anyone done this before?
> I would like to know what is the % difference in both software outputs?
> Thanks
> Deepika
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