压缩机转速对空气源热泵冷热水机组性能影响  

Influence of compressor speed on performance of air source heat pump cold and hot water unit

作　　者：李海军[1] 张中来 苏之勇 余壮 韩闯 白军琴 范雅 王春艳 LI Haijun;ZHANG Zhonglai;SU Zhiyong;YU Zhuang;HAN Chuang;BAI Junqin;FAN Ya;WANG Chunyan(School of Energy&Environment,Zhongyuan University of Technology,Zhengzhou 450007,China;Xu Hui Design Co.Ltd.,Zhengzhou 450016,China)

机构地区：[1]中原工学院能源与环境学院,河南郑州450007 [2]徐辉设计股份有限公司,河南郑州450016

出　　处：《热科学与技术》2023年第2期174-180,共7页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51676201);河南省高等学校供热空调重点学科开放实验室研究基金资助项目(2017HAC201)。

摘　　要：针对空气源热泵冷热水机组在高温及低温环境下,系统压缩机转速不匹配、系统性能衰减严重等问题,搭建了低压补气型空气源热泵冷热水机组实验台。结果表明:在43℃高温环境下,压缩机转速由3 000升高到4 500 r/min过程中,排气温度升高幅度为5.0%~11.5%,系统制冷量升高幅度为3.1%~26.9%,压缩机功率升高幅度为9.6%~11.4%;压缩机转速为3 500 r/min时,制冷系数COPC达到最大值3.20。在-10℃低温环境下,压缩机转速由3 000升高到4 500 r/min过程中,排气温度升高幅度为4.6%~6.9%,系统制热量升高幅度为2.9%~24.7%,压缩机功率升高幅度为10.4%~11.5%;压缩机转速为4 000 r/min时,制热系数COPh达到最大值2.98。Aiming at the problems of unmatched compressor speed and serious system performance degradation in air source heat pump cold and hot water units for high temperature and low temperature environments, a low-pressure air-supply air source heat pump cold and hot water unit test bench was built. The results showed that for a high temperature environment of 43 ℃, when the compressor speed is increased from 3 000 r/min to 4 500 r/min, the exhaust temperature increases by 5.0%-11.5%, the system cooling capacity increases by 3.1%-26.9%, and the compressor power increase range is 9.6%-11.4%. When the compressor speed is 3 500 r/min, the refrigeration coefficient COP_C reaches the maximum value of 3.20. For a low temperature environment of-10 ℃, when the compressor speed is increased from 3 000 r/min to 4 500 r/min, the exhaust gas temperature increases by 4.6%-6.9%, the system heating capacity increases by 2.9%-24.7 %, and the compressor power increase range is 10.4%-11.5%. When the compressor speed is 4 000 r/min, the heating coefficient COP_h reaches the maximum value of 2.98.

关 键 词：空气源热泵 冷热水机组 压缩机转速 系统性能 

分 类 号：U463.851[机械工程—车辆工程]