Re: [EnergyPlus_Support] Control of AirTerminal:SingleDuct:VAV:Reheat

Re: [EnergyPlus_Support] Control of AirTerminal:SingleDuct:VAV:Reheat - Sizing Problem

To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Subject: Re: [EnergyPlus_Support] Control of AirTerminal:SingleDuct:VAV:Reheat - Sizing Problem

From: "Annie Marston anniemarston@xxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Date: Thu, 15 Mar 2018 11:34:34 +0000

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Thread-topic: [EnergyPlus_Support] Control of AirTerminal:SingleDuct:VAV:Reheat - Sizing Problem [1 Attachment]

I know this problem well, but I can't open an idf right now to give you the exact solution, there is a something around the bottom of the object AirTerminal:SingleDuct:VAV:Reheat which turns on and off the reheat coil. Sorry I can't be more precise right now fiddle around with this object and it will suddenly magically turn on

From: EnergyPlus_Support@xxxxxxxxxxxxxxx <EnergyPlus_Support@xxxxxxxxxxxxxxx> on behalf of Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: 15 March 2018 10:53
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Control of AirTerminal:SingleDuct:VAV:Reheat - Sizing Problem [1 Attachment]

Dear All,

I assigned a typical VAV system (Baseline System 5) with reheat but there are many heating unmet hours in the zones served by the system. I did most of the quality checks (correct OA, zone setpoints, zone and system sizing etc.) to see where the problem lies. And i found ' AirTerminal:SingleDuct:VAV:Reheat' is NOT active or sizing is zero in HTML report. To further ascertain the cause of the problem, I plotted temperatures [ see attachment] at all the nodes to see the temperature regime. This also shows that reheat coil doesn't raise the air temperature to meet the room set-point.

This is being simulated for CZ5A.

I also tried to look out for some solutions discussed here [ LINK LINK ] but unfortunately nothing works for me.

I would appreciate any help in this regard.

Thank you,

Javed Iqbal, LEED AP, CEA

Sr. Energy Analyst

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Posted by: Annie Marston <anniemarston@xxxxxxxxxxx>

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