Re: [EnergyPlus_Support] A question about primary and secondary loop configuration

[Zhen Tian <tianzhen9@xxxxxxxxx>]

Thanks, Mike.

I have two further questions.

1. The compact HVAC chilled water loop does not allow variable  flow for both primary and decondary, it only allows varible+constant or constant+variable.

2. When I create two separate chilled water loops. I will create two chillers. How can I create two chilled water loops with only one chiller?

Thanks a lot for your help.

Regards,

Zhen

"Michael J. Witte" <mjwitte@xxxxxxxx> wrote:                               If you want to create two separate chilled water loops using COMPACT HVAC, you 
 must make two different idf files, and then merge them expidf files by hand 
 using a text editor.
 
 For this particular application, it may work for you to use COMPACT HVAC to 
 create a chilled water loop serving the cooling coils with variable flow 
 primary and variable flow secondary.  Then, using the expidf file, add LOW TEMP 
 RADIANT SYSTEM:CONSTANT FLOW to the simulation.
 
 Mike
 
 On 20 Dec 2007 at 11:02, Zhen Tian wrote:
 
 > Dear all,
 > 
 > I have a question about the configuration of primary and secondary chilled water
 > loops.
 > 
 > The primary chilled water loop has variable flow pump. Connected secondary loops
 > have two pumps, one constant flow pump for radiant panels and one variable flow
 > pump for cooling coils. In the compact HVAC, it does not allow two chilled water
 > loops. Does anyone has experience how to arrange this configuration?
 > 
 > Thanks a lot in advance.
 > 
 > Regards,
 > 
 > David
 > 
 > 
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 ========================================================
 Michael J. Witte, GARD Analytics, Inc.
 EnergyPlus Testing and Support      
 EnergyPlus-Support@xxxxxxxx
 
 
     
                               

       
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