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

["Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

That is as per G3.1.2.9.1,  sized supply-air-to-room-air temperature difference of  20degF (11.1degC) . All the Spaces winter set-point is 21degC so central heating design supply air tempretaire is 32.1 degC.

On Thu, Mar 15, 2018 at 4:55 PM, Germán Campos ecoeficiente@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Which are heating design supply temperatures in system and zone sizing?

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Germán Campos

Aurea Consulting  
www.ecoeficiente.es

2018-03-15 11:53 GMT+01:00 Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@yahoogroups.com>:

 

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 

--

Javed Iqbal, LEED AP, CEA

Sr. Energy Analyst 

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Posted by: Javed Iqbal <eee.javed@xxxxxxxxx>

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