SET Proceedings 2978-4387 Caravel Press 10.65582/set.2005.121 2005.121 Research on Operating Performance of CO2 Ground Source Heat Pump WangJinggang ShenJiang LiFang Tianjin University of Commerce, Tianjin, China Hebei University of Engineering , Handan, China 23092005 4 1 978-7-112-07718-2 548 552 23 September 2005 © 2005 Copyright WSSET 2005

According to the characteristics of the soil as the heat source and sink, the operation rules are studied on the ground source heat pump using CO2 as a refrigerant. The methods are brought forward and discussed to make certain the operation parameters and the control strategies of the ground source heat pump. The analysis shows that the capacity regulation and the pressure control based on the inlet water temperature of the gas cooler can be a better control strategy for CO2 ground source heat pump. And the pressure formula for operation control is also proposed. The main factors that affect the coefficient of the performance of the CO2 heat pump are analyzed.

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