[Equest-users] How to model constant air volume system using eQUEST?

[Daniel Knapp]

It sounds like you have a clear idea of how you would like to model your systems. I usually model constant volume as either PSZ or SZRH depending on which is a better match for the systems in questions.

I sometimes model a constant volume system as a VAV system with minimum flow set to 1.0 when I would like to model a constant supply air temperature, or a supply air temperature which resets according to outdoor air conditions.

All the best,

Daniel

—
Daniel Knapp, PhD, PPhys, BEMP, LEED AP
Senior Energy Analyst
ARBORUS CONSULTING
43 Eccles St. 2nd Floor,
Ottawa, ON K1R 6S3
(613) 234-7178 x113
danielk at arborus.ca<mailto:robinh at arborus.ca>
http://www.arborus.ca<http://www.arborus.ca/>



From: Equest-users <equest-users-bounces at lists.onebuilding.org> on behalf of zhaoyongqing1987 via Equest-users <equest-users at lists.onebuilding.org>
Reply-To: zhaoyongqing1987 <zhaoyongqing1987 at 126.com>
Date: Friday, October 12, 2018 at 10:37 AM
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Subject: [Equest-users] How to model constant air volume system using eQUEST?


How do you model constant air volume system using eQEST? As I kown,most of eQUEST users model constant volume system as VAV system but set the minmum airflow setpoint to 1.0.And I think this method is not appropriate,because the VAV system adjusts the cooling and heating load by varing the supply air volume but keep the supply air temperature constant, set the minmum airflow setpoint of VAV system to 1.0 means that the supply air volume and temperature are kept constant,however,the cnonstant air volume system adjusts the heating and cooling load by varing the supply air temperature but keep the supply air volume contstant. I always model the constant air volume as single zone reheat.And I want to kown what is your solution to this problem!

Any suggestion?Thanks!





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