摘要
为研究变转速压缩机对复叠式热泵系统的影响,本文搭建了高温压缩机变转速的复叠式热泵实验台。通过实验研究了不同运行工况下系统排气温度、中间温度、制热量、功率及COP随高温压缩机转速的变化规律。结果表明:在冷凝温度为46℃,蒸发温度为-35℃^-10℃时,压缩机运行安全可靠;在冷凝温度为46℃,蒸发温度为-25℃,高温压缩机转速从1200 r/min增至6000 r/min,制热量提升了129.7%,低温压缩机功率减少43.4%;COP随高温压缩机转速的增加呈先增大后减小的趋势,存在最大COP和对应的最佳高温压缩机转速。
To study the effect of a variable rotation speed compressor on the performance of a cascade heat pump,an experimental platform was constructed.The changes of discharge temperature,intermediate temperature,heating capacity,power consumption,and Coefficient of Performance(COP)with different rotation speeds of a high-temperature compressor were studied experimentally.Experimental results demonstrated that the system operated safely and reliably under the condition of a condensing temperature of 46℃and an evaporating temperature between-35 and-10℃.As the high-temperature compressor speed varied from 1200 to 6000 r/min and the condensing temperature was 46℃and the evaporating temperature-25℃,the heating capacity increased by 129.7%,and the low-temperature compressor power decreased by 43.4%.In addition,the COP initially increased and then decreased with the increase of high-temperature compressor speed;there was a maximum COP and corresponding optimal high-temperature compressor speed.
作者
杨永安
李瑞申
孙志利
李勤国
Yang Yongan;Li Ruishen;Sun Zhili;Li Qinguo(Tianjin University of Commerce, Refrigeration Engineering Research Center of Ministry of Education of People’s Republic of China,Tianjin Key Laboratory of Refrigeration Technology, Tianjin Refrigeration Engineering Technology Center, Tianjin, 300134,China)
出处
《制冷学报》
CAS
CSCD
北大核心
2020年第3期65-70,共6页
Journal of Refrigeration
基金
天津市创新团队项目--食品冷链装置节能及储运新技术(TD12-5048)资助项目。
关键词
复叠式热泵
循环性能
变转速
COP
制热量
cascade heat pump
cycle performance
variable rotation speed
COP
heating capacity
