May I ask what is a "scroll type" compressor.
I have not check the data base folder for this type. I think, it is only the performance curves are different in the simulation.
As far as I know, it does not matter whether it is a heat pump or an EIR when it is used for chiller only.
Condenser is to air, therefore, no condenser loop is required.
Your design is a simple water chiller.
Coil water to air, means the coil is water and the air flows through the coil surface. If the coolant flows in the coil, then it is a DX coil.
Heatpump is usually operated with air to air, with the evaporator and compressor coil switched around for coolant and heating in a location that the Winter is not very cold.
For a large capacity heatpump, then water is used to feed the AHU coils, and the condenser loop provides more cooling and may use water to feed a tower to help cooling.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xing.shi.2006@xxxxxxxxx
Date: Fri, 21 Sep 2012 09:59:11 +0000
Subject: [EnergyPlus_Support] How to model an air-cooled scroll-type heat pump
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I have not check the data base folder for this type. I think, it is only the performance curves are different in the simulation.
As far as I know, it does not matter whether it is a heat pump or an EIR when it is used for chiller only.
Condenser is to air, therefore, no condenser loop is required.
Your design is a simple water chiller.
Coil water to air, means the coil is water and the air flows through the coil surface. If the coolant flows in the coil, then it is a DX coil.
Heatpump is usually operated with air to air, with the evaporator and compressor coil switched around for coolant and heating in a location that the Winter is not very cold.
For a large capacity heatpump, then water is used to feed the AHU coils, and the condenser loop provides more cooling and may use water to feed a tower to help cooling.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xing.shi.2006@xxxxxxxxx
Date: Fri, 21 Sep 2012 09:59:11 +0000
Subject: [EnergyPlus_Support] How to model an air-cooled scroll-type heat pump
The design system is as follows:
- heat pump
- compressor is scroll-type
- heat sink is air
- heat pump produces chilled water and hot water
- cooled or heated air is blown into the zones
We are considering using the object Coil:Cooling:WaterToAirHeatPump:ParameterEstimation and Coil:Heating:WaterToAirHeatPump:ParameterEstimation to model the system. However, in the E+ example file folder we could only find examples with ground source heat exchanger as the heat sink. In our case, the heat pump is air-cooled, which means the heat sink is outdoor air. We don't know how to model that. Or, we should use another object?
Please help. Thank you!
- heat pump
- compressor is scroll-type
- heat sink is air
- heat pump produces chilled water and hot water
- cooled or heated air is blown into the zones
We are considering using the object Coil:Cooling:WaterToAirHeatPump:ParameterEstimation and Coil:Heating:WaterToAirHeatPump:ParameterEstimation to model the system. However, in the E+ example file folder we could only find examples with ground source heat exchanger as the heat sink. In our case, the heat pump is air-cooled, which means the heat sink is outdoor air. We don't know how to model that. Or, we should use another object?
Please help. Thank you!
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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