流体机械2025，Vol.53Issue(4)：24-29,6.DOI:10.3969/j.issn.1005-0329.2025.04.004
高温制冷工况下三压力热泵系统性能试验研究
Experimental study on the performance of three-pressure heat pump system under high-temperature refrigeration conditions
摘要
Abstract
Aiming at the problems of poor cooling effect,energy efficiency ratio(EER)and low operational reliability of air source heat pump system under extreme working conditions,a three‑pressure heat pump system was developed and an experimental platform was built.The cooling performance of the single‑stage heat pump system and the three‑pressure heat pump system was compared and analyzed through the experimental research.The results show that with the increase of compressor speed,the cooling capacity of the three‑pressure system is higher than that of the single‑stage system.At 4 500 r/min,the cooling capacity is higher by 9.7%,the EER is higher by 4.72%,and the exhaust temperature of the three‑pressure system is lower by 4.23%.When the outdoor temperature is greater than 43℃,the cooling capacity and EER of the three‑pressure system increase compared with that of the single‑stage system.When the outdoor temperature is 43℃and 46℃,the cooling capacity of the three‑pressure system increase 26.06%and 37.9%,and the EER increase 8.6%and 20.5%.With the increase of the outdoor temperature,the effect of the three‑pressure system on suppressing the compressor exhaust temperature is more obvious.When the outdoor temperature is 46℃,the exhaust temperature is reduced by 12.33%.The research results provide a reference for the application of air source heat pump system in extreme working conditions.关键词
三压力热泵系统/极端工况/能效比Key words
three‑pressures heat pump system/extreme conditions/energy efficiency ratio分类
通用工业技术引用本文复制引用
白静,和思源,崔四齐,郑慧凡,王乐健,范惠芳,陈明志..高温制冷工况下三压力热泵系统性能试验研究[J].流体机械,2025,53(4):24-29,6.基金项目
国家自然科学基金项目(52076219) （52076219）
