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heat recovery chiller in E+

Is there a example of how to model heat recovery chiller in E+?

I created a model but it seems the heat exchanger always reduce the hot water temperature thus actually largely increase the heating energy.

The basic scheme is like this: Chiller provides cooling for interior zones in winter, Chiller Condensing Water (CW) run thru HX HX connected in HW loop before boiler to pre heat HW for zone heating or reheat.

But problem I see is that the CW temperature is always lower than HW return temperature thus I am using HW to heat up CW. I dont know if there is a right way of doing it. Thanks

wangh's avatar
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wangh
asked 2015-03-20 09:41:51 -0500
Neal Kruis's avatar
4.7k
Neal Kruis
updated 2015-04-13 13:53:22 -0500
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HeatRecoveryElectricChiller.idf in example file folder shows how to model heat recovery electric chiller. It uses mixed water heater to connect heat recovery loop with zone reheat coils.

Chandan Sharma's avatar
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Chandan Sharma
answered 2015-03-20 22:19:22 -0500
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Thanks Chandan. I wonder if I could do it openstudio or designbuilder. I read the file you mentioned. It seems like there is a direct input for heat recovery loop under Chiller:EIR. But I didnt find those inputs in OS or DB... If I can do it in GUI that would be much better

wangh's avatar wangh (2015-03-23 07:59:12 -0500) edit
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@wangh, I have the same question!! Have you found the method to simulate heat recovery chiller in OpenStudio? Thanks

Yan's avatar Yan (2015-07-14 15:33:31 -0500) edit
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