Title: Experimental Research of Trans-critical CO_2 Heat Pump System Performance
Abstract: In order to promote the efficiency of trans-critical CO2 heat pump water heater,by building a trans-critical CO2 heat pump system experimental units,to study its performance and find its operating regular pattern.The results show that:when the termination temperature of water is constant,the heat of cooling water absorbs from the gas cooler increases first and then reduce as the high-pressure in an evaporation temperature;the COP of system exsists a maximum value,that is,there is an optimal high-pressure Popt;and the COP of system rises with evaporation temperature going up;after replacing the tube with spiral in inner tube of coaxial heat exchanger,the system works more stable and COP has been improved.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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