Vortex Tube Expansion Transcritical CO2 Heat Pump Cycle
The application of natural refrigerant CO2 is of great significance to reduce the greenhouse effect and ozone depletion.Transcritical CO2 heat pump cycle is presently an important aspect of natural refrigerant alternatives research.In this paper, a vortex tube expansion transcritical CO2 heat pump cycle is established and compared to that of the transcritical CO2 refrigeration cycle with throttle valve.Thermodynamic analysis results indicate that the system performance of vortex tube expansion transcritical CO2 heat pump cycle is better than the transcritical CO2 heat pump cycle with throttle valve, and the COPh improvement is 5.8%~13.9% at given conditions.The gas-cooler outlet temperature has a great impact on the system performance, there is a higher COPh improvement when the cycle at lower evaporation temperature or higher gas-cooler outlet temperature.
Transcritical CO2 Heat Pump Cycle Vortex Tube Coefficient of Performance COPh Improvement
Liu Yingfu Geng Chunjing Jin Guangya
Baoding Electric Power VOC.& TECH.College,Baoding,Hebei,071000,China North China Electric Power University,Baoding,Baoding,Hebei,071000,China
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1340-1344
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）