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Re: [EnergyPlus_Support] VAV cooling still working when room T is lower than setpoint T
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- Subject: Re: [EnergyPlus_Support] VAV cooling still working when room T is lower than setpoint T
- From: Richard Raustad <RRaustad@xxxxxxxxxxxx>
- Date: Fri, 08 Feb 2013 12:21:54 -0500
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Find out which water cooling coil is requesting flow. Any flow request
on the demand side of the loop with turn on the plant.
Report coil water inlet node volume flow rate for all water cooling coils.
This should tell you which cooling coil is operating. Then determine why
this one (or more) coil(s) is operating.
It may be that the VAV cooling coil is trying to meet a low set point
temperature even though the room thermostats are satisfied.
On 2/8/2013 12:14 PM, HJ wrote:
> Hi all,
>
> I notice the VAV system is still running even if room T is way below
> setpoint T (e.g. at night ,Tsetpoint is 26, Troom is 22 something).
> However, CAV system does not have this type of problem. Since I am
> modeling hybrid ventilation, I would like the VAV system shut down when
> Troom meets Tset. Is there a way to achieve that?
>
> Thanks,
>
> HJ
>
>
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--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years
------------------------------------
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