[Equest-users] Pkg VAV - General Question - Ventilation

[Nathan Miller via Equest-users]

Is your weather-file-location at a high elevation? I think eQUEST assumes all input CFM are at standard atmospheric pressure (aka- sea level) and adjust the flows to compensate for decreasing pressure at higher elevations.

I *think* you can manually adjust the elevation to undo this adjustment, but I'm not sure what other impacts it might have on the simulation.


Nathan Miller, PE, LEED AP BD+C - Mechanical Engineer/Senior Energy Analyst
RUSHING | O 206-285-7100 | C 207-650-3942
www.rushingco.com<http://www.rushingco.com/>

From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Mike Schaefer via Equest-users
Sent: Saturday, January 28, 2017 5:18 PM
To: Annie Marston via Equest-users <equest-users at lists.onebuilding.org>
Subject: [Equest-users] Pkg VAV - General Question - Ventilation


I'm modeling a Pkgd Var Vol rooftop unit with VAV boxes in eQUEST version 3.65 and I have a ventilation issue. The issue is this...



Although I enter an Air Flow rate in cfm for each VAV box, the program insists on increasing my cfm by 1.05% when I run a simulation. I can't seem to force the program to model the ventilation cfm that I've entered. How can I stop eQUEST for increasing by hardwired ventilation cfm? What factors do I need to modify to run a simulation with the ventilation quantities for my scheduled cfm?



thanks,



Michael Schaefer - P.E.*, LEED AP

Licensed in Kansas, Missouri, and Colorado

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