Experimental Investigation of a Novel Air Source Heat Pump for Cold Climate

摘要：

In order to improve air-source heat pumps heating capacity in cold climate,this paper presents a novel system,which integrates the compressor heat recovery unit into the two-stage compression cycle and is supplemented by the low-pressure vapor feeding unit.Thus the low temperature adaptability of the system is greatly enhanced.A prototype whose standard heating capacity is 8 kW is designed and a series of tests are conducted,in which the ethylene glycol solution loop is used to simulate outdoor environment.The experimental results show that the system is capable of providing 50 ℃ heating hot water when outside temperature is -20 ℃,while the COP is 1.76; The heating capacity of the system is 4.71 kW and the exhausted temperature of the compressor is below 100 ℃.

关键词： Cold climate Air-source Heat pump Two-stage compression Compressor heat recovery

作者: Xu Jin Shugang Wang Meng Huo

作者单位: School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,China

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 1437-1443

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）