Re: [EnergyPlus_Support] Preheat Coil Operation

["Michael J. Witte" <mjwitte@xxxxxxxx>]

I tried to reproduce the problem by adding preheat to example file CompactHVAC-
5ZoneVAVWaterCooled.idf, but the preheat coil puts out 7.2C, even with 100% OA 
on the winter design day.  Please post the file in the yahoo file area or send 
zipped to energyplus-support@xxxxxxxx.

Mike


On 14 Nov 2006 at 22:36, asheaffe wrote:

> I am simulating a COMPACT VAV system that has a preheat coil due to 
> the large amount of OA that my zones require.  I have the gas preheat 
> coil set to deliver 7.2C minimum to the system.  However, during the 
> simulation, the outlet temp of the coil regularly fluctuates below 
> that temp.  In fact during the design day it stays at -3.5C.    The 
> schedule for the coil is currently blank, meaning it should be 
> available all the time.  Any ideas on what might cause this?  I can 
> post the file, if there are no quick fixes.
> 
> Thanks,
> 
> Andrew
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the appropriate folder
> in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the
> "search" button.
>  
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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