RE: [EnergyPlus_Support] isolation valve at the water-to-air heat pump

To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Subject: RE: [EnergyPlus_Support] isolation valve at the water-to-air heat pump

From: "Edward G. Lyon" <eglyon@xxxxxxx>

Date: Wed, 31 Aug 2011 13:30:51 -0400

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Thread-topic: [EnergyPlus_Support] isolation valve at the water-to-air heat pump

Look at

HVACTemplate:Plant:MixedWaterLoop

In the documentation. As I read it the using a variable flow with intermittent operation should do what you want with bypass only occurring when minimum pump flow exceeds demand.

Ned Lyon, P.E. (MA)
Staff Consultant

SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Ery Djunaedy
Sent: Wednesday, August 31, 2011 1:01 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] isolation valve at the water-to-air heat pump

All,

I am trying to develop an energy efficiency measure for water source
heat pump system. This one involves the installation of VFD on the main
circulation pump which will reduce the flow rate of the water when there
is no call for cooling or heating from the heat pumps.

The only problem is that the model for this s

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