制冷技术2024，Vol.44Issue(2)：47-52,6.DOI:10.3969/j.issn.2095-4468.2024.02.202
低温空气源热泵系统新型节能技术研究
Research on Novel Energy Saving Technologies of Low Temperature Air-source Heat Pump System
摘要
Abstract
In order to solve the above problems,the quasi-two-stage compression technology based on gas-liquid coupling injection(GLCI)and the heat pump with large temperature difference technology are proposed in this paper from the aspects of refrigerant cycle and water cycle of air source heat pump heating system.The former improves the energy efficiency of heat pump unit by regulating the mass flow rate of refrigerant,while the latter improves the overall energy efficiency of heating system by increasing the water temperature difference between the inlet and outlet of heat pump units,which could reduce the energy consumption of conveying system by decreasing water mass flowrate.The experimental study on the above two technologies shows that the GLCI system has better adaptability in low ambient temperature than the enhanced vapor injection system,and the heating capacity and coefficient of performance(COP)are improved by 5%and 6.95%respectively due to the increase of refrigerant circulation flow rate.Compared with small temperature difference(5℃),the large temperature difference heat pump technology(15℃)can reduce the proportion of water pump energy consumption in heating systems by more than 70%,and increase the heating season performance factor(HSPF)by 16.1%～24.4%.关键词
空气源热泵/气液耦合喷射/大温差热泵技术/制热能效比/节能技术Key words
Air-source heat pump/Gas-liquid coupling injection/Heat pump with large temperature difference/Coefficient of performance/Energy saving technology分类
通用工业技术引用本文复制引用
骆名文,张光鹏,陈梦羽,王如竹,胡斌,黄华,相明琼,李敏..低温空气源热泵系统新型节能技术研究[J].制冷技术,2024,44(2):47-52,6.基金项目
国家自然科学基金(No.52036004). （No.52036004）
