[Equest-users] Accuracy of eQUEST

[Fred Betz]

Garbage in, garbage out.

If the model inputs accurately reflect what’s is really happening, then yes it’s fairly accurate. Which is true for a lot of modeling tools.

Things like weather, schedules (occupancy, lights, equipment, etc.) can frequently be very different than reality, which can lead to a pretty wide range of results.

If you only want to use default inputs and typical weather and compare that to a real building data, then be prepared to have a 50% difference or more from what’s measured.

Hope that helps.

Fred


Fred Betz, PhD, LEED® AP BD+C
Building Performance
(D) 608-236-1175 | (M) 608-444-4857 | (O) 608-238-2616
Affiliated Engineers, Inc.<https://aeieng.com/>
5802 Research Park Boulevard | Madison, WI 53719


From: John Aulbach <jra_sac at yahoo.com>
Sent: Saturday, May 8, 2021 12:30 PM
To: equest-users at lists.onebuilding.org; Saroj Lamichhane <213saroj at gmail.com>
Subject: Re: [Equest-users] Accuracy of eQUEST

Hello:

Not sure about the question you are asking.

DOE-2 (the engine of eQuest) has been around since the late 1970s. I know the creators and researchers have done countless benchmarking simulations against existing buildings to make the program viable. I myself have done runs against buildings with sub metering and the tracking has always been excellent.

Also, when I have run EEMs against a Base model, and had those modifications M&V'd later, they always seem to match.

So I think there should not be a worry of the accuracy of eQuest/DOE-2.

John R. Aulbach, PE

On Friday, May 7, 2021, 07:58:33 PM PDT, Saroj Lamichhane via Equest-users <equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>> wrote:


Hello everyone,
Does anybody have information about the effective modeling capability (Accuracy) of eQUEST with respect to the building parameters? Have a nice weekend!
Thank you!
Saroj Lamichhane


_______________________________________________
Equest-users mailing list
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
To unsubscribe from this mailing list send  a blank message to EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG<mailto:EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20210508/2158528e/attachment.htm>