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2500 r/min增加到5500 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2500~4500 r/min时,系统的匹配性较好;压缩机转速在4500 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。
[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 difference laboratory.[Findings]Under the standard refrigeration working condition,when the compressor speed was increased from 2500 r/min to 5500 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 increased,and the pressure ratio increased from 3.04 to 4.26,while the suction pressure shows a decreasing trend.[Conclusions]When the compressor speed is 2500~4500 r/min,the system is well matched;after the compressor speed is 4500 r/min,the system is poorly matched;this paper provides experimental data for the subsequent further optimization of inverter compressor on the performance of air conditioning or heat pump system for reference.
作者
余壮
张瑶鑫
赵晓丹
王素英
赵楠楠
YU Zhuang;ZHANG Yaoxin;ZHAO Xiaodan;WANG Suying;ZHAO Nannan(School of Civil Engineering and Architecture,Zhengzhou University of Economics and Trade,Zhengzhou 451191,China)
出处
《河南科技》
2024年第8期50-53,共4页
Henan Science and Technology
基金
河南省科技厅“蓄能型空气源热泵机组关键技术研究与产品开发”(202102310556)
2023年郑州经贸学院教学改革项目“基于‘双碳’背景下应用型人才培养目标《空调用制冷技术》课程教学改革研究”(jg2331)
2023年郑州经贸学院教学改革项目“数字化在《供热工程》教学模式与教学改革中的应用”(jg2319)
2022年郑州经贸学院青年科研基金项目“冷藏与冷冻用同步双循环复合制冷系统关键技术研究”(QK2203)
2022年郑州经贸学院青年科研基金项目“新郑华祥国贸大厦办公楼气流组织分析与优化”(QK2215)。
关键词
压缩机转速
空气源热泵
制冷性能
compressor speed
air source heat pump
refrigeration performance
