[Equest-users] [EXTERNAL] eQuest 7175 DOE2.3 Simulation Speed

[Jennings, Coles]

Christina,

One quick fix we have found is to make sure to specify Design Days for both cooling and heating. On the “Project & Site” tab, right click the project name at the very top of the component tree and then select “Create Design Day” and enter the design temperature information. You’ll need to do this twice to cover cooling and heating design conditions. This reduces simulation time by a fair amount as it seems to cut down on the repeat load calculations that run in 7175 without design day conditions specified. We have still observed longer run times in general, but this helps.

Thanks,

Coles Jennings PE, BEMP, LEED AP BD+C
Sr. Energy and Sustainability Engineer | Mason & Hanger
A Day & Zimmermann Company
O 804.521.7045
4880 Sadler Road, Suite 300 | Glen Allen, VA 23060
masonandhanger.com<http://www.masonandhanger.com/>

An ISO 9001 Certified Company<https://www.masonandhanger.com/about/iso>

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From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf Of Christina LaPerle via Equest-users
Sent: Thursday, December 10, 2020 9:26 AM
To: equest-users at lists.onebuilding.org
Subject: [EXTERNAL] [Equest-users] eQuest 7175 DOE2.3 Simulation Speed

Hi All,

I always read everyone's posts but have never posted. Thank you for all of the informative exchanges over the years.

I have been using the 7175 DOE2.3 version of eQuest since it was released and have found the simulation times to be significantly greater than the 7173 DOE2.2 build (even with creating the heating and cooling design days in detailed mode). I'm wondering if anyone else has experienced this, and, if so, if you have found a way to speed up simulation times. In smaller models (~50,000 sf) it is not a big deal but with larger models (~350,000 sf+) I find that it impacts productivity greatly.

Any input would be appreciated.

Thanks!

Christina

Christina LaPerle PE, BEMP, CEM, CBCP
Senior Energy Engineer
________________
Karpman Consulting
Phone 860.266.6220<tel:860.266.6220>
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