摘要
本文以某厂家补气增焓准二级压缩空气源热泵热水器为研究对象,研究了补气压比对系统制热量和性能系数(COP)的影响,对实验结果进行了热力学分析。结果表明:随着补气压比的增加,系统COP和制热量均呈现先上升后下降的现象;在实验的3种工况下,补气压比为0.2时系统COP达到最大值,相较于未调节补气压比的补气增焓准二级压缩空气源热泵系统,COP分别增长了23.1%、20.2%和8.2%。
The quasi-secondary compressed enhanced vapor-injection air-source heat pump water heater of a certain manufacturer is taken as the research object,and the experimental results are subjected to thermodynamic analysis.The effect of the vapor-injection pressure ratio on the heating capacity and coefficient of performance(COP)of the system is studied.The results show that with the increase of the vapor-injection pressure ratio,the system's COP and heating capacity both increase and then decrease.Under the three operating conditions of the experiment,the COP of the system reached the maximum value when the vapor-injection pressure ratio is 0.2,compared with the enhanced vapor-injection quasi-secondary compressed air-source heat pump system without adjusting the vapor-injection ratio,the COP increased by 23.1%,20.2%and 8.2%,respectively.
作者
曾智
刘向龙
李小华
王艳
李文菁
曾丽萍
ZENG Zhi;LIU Xianglong;LI Xiaohua;WANG Yan;LI Wenjing;ZENG Liping(Department of Building Engineering,Hunan Institute of Engineering,Xiangtan 411104,Hunan,China;Hunan Engineering Research Center of Energy Saving and Material Technology of Green and Low Carbon Building,Xiangtan 411104,Hunan,China)
出处
《制冷技术》
2021年第1期35-40,共6页
Chinese Journal of Refrigeration Technology
基金
湖南省自然科学基金(No.2018JJ4040)
湖南省教育厅科研项目(No.17B064)
国家重点研发计划(No.S2016G2422)。
关键词
空气源热泵
补气增焓
补气压比
热力学优化
COP
Air-source heat pump
Enhance vapor injection
Vapor injection pressure ratio
Thermodynamic optimization
COP
