Heat Pump Chiller Using Hydro Carbon as Refrigerant

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  • 311 HC 冷媒ヒートポンプチラー

Description

A heat pump chiller using propane as refrigerant applicable to the ice thermal storage system is introduced. HCFCs used as refrigerant have some ODP, and HCFCs and HFCs have high GWP, but HCs such as propane have very low GWP. The propane refrigerant is promising as the alternative refrigerant of HCFCs and HFCs because of the thermodynamic properties. However, the problem of propane is flammability. We have adopted continuous dilution with an air heat exchanger fan for common use as the security measure if propane leak from the heat pump chiller. It is found that the propane heat pump chiller has higher COP than the R407C heat pump chiller in ice thermal storage operation.

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