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[EnergyPlus_Support] Re: Primary Variable - Secondary Constant - Run Error





I recently tried to model a variable speed pump on the primary / supply side of a chilled water loop and got the following warning from EnergyPlus:

   ** Warning ** SetupCommonPipes: detected variable speed pump on supply inlet of TwoWayCommonPipe plant loop
   **   ~~~   ** Occurs on plant loop name = CHILLED WATER LOOP
   **   ~~~   ** The common pipe model does not support varying the flow rate on the primary/supply side
   **   ~~~   ** The primary/supply side will operate as if constant speed, and the simulation continues
 
Looks like EnergyPlus might be changing your primary pump to constant speed, and since you have a constant speed secondary pump, water may continuously flow through the boiler and overheat. Do you see a similar warning in your error file?


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Posted by: flyn.hawyn@xxxxxxxxx


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