压缩机转速对空气源热泵机组制冷性能影响的试验研究
Experimental Research on the Effect of Compressor Rotation Speed on the Refrigeration Performance of Air Source Heat Pump Unit
余壮 1张瑶鑫 1赵晓丹 1王素英 1赵楠楠1
作者信息
- 1. 郑州经贸学院土木建筑学院,河南 郑州 451191
- 折叠
摘要
[目的]研究压缩机转速对空气源热泵系统制冷性能的影响.[方法]搭建以R410A为制冷工质的空气源热泵机组系统试验台,在标准焓差实验室进行试验.[结果]在标准制冷工况下,压缩机转速从2 500 r/min增加到5 500 r/min时,系统的制冷量增长了122.65%,压缩机功率增长了65.08%,系统的COP和EER分别增长了34.87%、46.99%,系统的排气温度及排气压力均上升,压比由3.04上升到4.26,而吸气压力呈下降趋势.[结论]压缩机转速为2 500～4 500 r/min时,系统的匹配性较好;压缩机转速在4 500 r/min后,系统的匹配性较差.研究成果为后续进一步优化变频压缩机对空调或热泵系统的性能提供试验数据参考.
Abstract
[Purposes]This paper aims study the effect of compressor speed on the cooling performance of air source heat pump system.[Methods]An air source heat pump unit system test bench with R410A as the refrigeration medium was constructed,and experiments were carried out in the standard enthalpy dif-ference laboratory.[Findings]Under the standard refrigeration working condition,when the compressor speed was increased from 2 500 r/min to 5 500 r/min,the refrigeration capacity of the system increased by 122.65%,the compressor power increased by 65.08%,and the COP and EER of the system increased by 34.87%and 46.99%,respectively;the exhaust temperature and exhaust pressure of the system in-creased,and the pressure ratio increased from 3.04 to 4.26,while the suction pressure shows a decreas-ing trend.[Conclusions]When the compressor speed is 2 500～4 500 r/min,the system is well matched;after the compressor speed is 4 500 r/min,the system is poorly matched;this paper provides experimen-tal data for the subsequent further optimization of inverter compressor on the performance of air condi-tioning or heat pump system for reference.
关键词
压缩机转速/空气源热泵/制冷性能Key words
compressor speed/air source heat pump/refrigeration performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据