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modeling photovoltaic system with refrigerant loop in EnergyPlus

asked 2018-05-25 02:52:07 -0600

dana gravatar image

Is it possible to model the photovoltaic system connected with heat pump, refrigerant loop in EnergyPlus?

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@dana Do you refer to PV powered Heat Pump or do you refer Solar-assisted heat pump?

Avi gravatar imageAvi ( 2018-05-26 01:26:46 -0600 )edit

@Avi It is a solar-assisted heat pump with a refrigerant loop on the source side and a water loop on the demand side, but a little bit different. It can produce pv power and thermal energy as well but also can dissipate heat. Moreover, It is not only using solar but also nocturnal. I think it might be a little bit different what people usually think solar-assisted heat pump. Is this system able to be modeled with EnergyPlus?

dana gravatar imagedana ( 2018-05-27 01:59:30 -0600 )edit

@Avi I want to figure out whether EnergyPlus can model a refrigerant loop on the source side.

dana gravatar imagedana ( 2018-05-27 02:01:31 -0600 )edit

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answered 2018-05-27 06:54:10 -0600

Avi gravatar image

To my best knowledge that is not possible in OS or in E+.

Maybe you can use SolarCollector:FlatPlate:PhotovoltaicThermal (PVT) which you can connect to a Water to Water Heat Pump at the source side. You will probably have to tweak the performance in order to reach the predicted DX performance.

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answered 2018-06-01 00:14:15 -0600

dana gravatar image

@Avi Thank you for your kind answer. I want to ask more about tweak the performance thing. Is that mean that I can model the refrigerant loop by modeling a water loop instead and make some revision on performance coefficient inside EnergyPlus idf file then get a result looks like a result of a refrigerant loop? I am asking because I am not sure that I understood right.

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@dana you can edit the performance curves of the water to water HP as well as the curves of the PVT in order to match it with the DX predicted performance. you can read about that in the I/O reference and in the Engineering reference.

Avi gravatar imageAvi ( 2018-06-01 00:53:51 -0600 )edit

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Asked: 2018-05-25 02:52:07 -0600

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Last updated: Jun 01