[Equest-users] OA-CFM/PER?

[Fleming, Joe]

We had just noticed that typo over here this week as well.  It is FLOW/PER in the .inp file.

Another question on that topic.
If you input outside air as "OUTSIDE-AIR-FLOW" for each zone, does this override DCV's ability to ratchet down the outside air rate based on occupancy schedule?
Should OA be input as people and "OA-FLOW/PER", when trying to accurately model DCV?

Sometimes when using DCV we don't see near the savings that we would expect for a South Florida climate.  And we have yet to pinpoint the outside air loads on the systems in the detailed simulation output reports.

Joe Fleming
E.I., LEED AP BD+C, BEMP
Mechanical Engineer I

TLC Engineering for Architecture
Your 2030 Challenge Partner

800 Fairway Drive, Suite 250
Deerfield Beach, FL 33441-1816

phone:

954-418-9096

fax:

954-418-9296

direct:

954-418-4591

website:

www.tlc-engineers.com<http://www.tlc-engineers.com>


[cid:image001.gif at 01CB6470.6E151020]<http://www.tlc-engineers.com/>

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of STEVE SAMENSKI
Sent: Monday, October 04, 2010 7:55 PM
To: equest-users
Subject: [Equest-users] OA-CFM/PER?

Here's a question about Demand Controlled Ventilation in eQuest.  I'm trying to justify a model I built that uses critical zone DCV.  In the past I've simply trusted that eQuest calculates this properly but now I find myself having to provide backup rationale to the USGBC.

In Volume 6 of the documentation it states: "Each zone OA requirement is calculated based upon the hourly maximum of either OA-CFM/PER (times the NUMBER-OF-PEOPLE adjusted by the hourly PEOPLE-SCHEDULE) or a minimum OA ventilation rate."  However, "OA-CFM/PER" is never defined in any other dictionary, at least not in any manner that would tell you how to change or input this variable (it is referenced elsewhere).  I think this is a typo.  I think the sentence should refer to "OA-FLOW/PER", which is a perfectly transparent and well-behaved user input (so far as I know).

Anyone run across this before?  Can anyone confirm that Volume 6 has a typo?

Steve Samenski, PE, LEED AP, BEMP
Vice President - Sustainable Technologies
The Spinnaker Group, Inc.
http://equest-diary.livejournal.com/
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