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Re: [EnergyPlus_Support] Packaged VAV system



I modeled the system with a single speed DX Cooling Coil and I don't get any Psychrometry warnings, but I get a bunch of SimHVAC iterations exceeded. And the only other warning I get is that the RatedVolFlowPerWatt is not within limits. How do I go about corecting this warning, already all the inputs (SHR, Flow rate, Capacity) are autosized? is there anything I am missing?

Thank you.



On Mon, Nov 15, 2010 at 9:38 AM, Vinay Devanathan <vinay.devanathan@xxxxxxxxx> wrote:
I am not sure how it will perform as I am yet to simulate. But with the twospeed coil I got a lot of psychrometric errors and that is why I thought of using the singlespeed coil. 


On Nov 15, 2010, at 9:27 AM, "James V Dirkes II, PE" <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

 

Dear Vinay,

 

While possible, I suspect that it may stretch the coil?s abilities, especially at low air flow rates.  I seem to get a lot of psychrometric errors with that setup.

 

 

The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Richard Raustad
Sent: Monday, November 15, 2010 8:55 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Packaged VAV system

 

 

Yes it is possible. See example file TermRHDXSystem.idf.

On 11/15/2010 8:46 AM, Vinay Devanathan wrote:

 

Hello,

 

I am trying to model a Packaged VAV w/ Reheat. Is it not possible to model the system with a SingleSpeed DX Cooling Coil? I did run the model with this setting but it gives me a warning saying - probably incorrect cooling coil model

for the VAV system. Any guidance would be appreciated.

 

Thank you.

 

Regards,

Vinay

 



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Richard A. Raustad
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