余壮 张瑶鑫 赵晓丹 王素英 赵楠楠

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。

关键词：压缩机转速；空气源热泵；制冷性能

中图分类号：TB61      文献标志码：A     文章编号：1003-5168（2024）08-0050-04

DOI：10.19968/j.cnki.hnkj.1003-5168.2024.08.010

Experimental Research on the Effect of Compressor Rotation Speed on the Refrigeration Performance of Air Source Heat Pump Unit

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）

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 difference 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 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 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 experimental data for the subsequent further optimization of inverter compressor on the performance of air conditioning or heat pump system for reference.

Keywords： compressor speed; air source heat pump; refrigeration performance

0 引言

我国北方地区“煤改电”政策和相关措施相继实施，并获得了一定的成效，为热泵技术的发展带来新的机遇［1］。空气源热泵具有节能、环保、能效高等特点，广泛应用于人们的生活和工作环境中［2］。而压缩机作为空调系统的四大件之一，是影响空调性能的核心部件［3］。

许多学者针对压缩机转速或者频率对空调系统性能的影响进行了研究。秋雨豪等［4］研究了压缩机转速对冷藏车制冷机组性能的影响，结果表明，当环境温度为50 ℃时，在冷藏和冷冻模式下，压缩机转速从800 r/min升至1 600 r/min的过程中，压缩机排气温度、排气压力分别升高至110.9～130 ℃、26.8～29.5 bar。许文明等［5］为了提高房间空调器运行时室内热舒适性，提出一种基于压缩机频率及室内机风机转速的温湿双控方法，结果表明，该方法能够有效实现温度调节至设定温度，相对湿度维持在40%～60%范围，满足用户热舒适要求。……