摘要
在热泵热水器的名义工况下,对R32/R1234yf混合工质热泵循环性能进行计算分析。结果表明:R32/R1234yf的最优质量配比为60/40,使制热性能系数达到最大值4.727,较R22系统增大8.64%;在最优质量配比下,R32/R1234yf系统的单位容积制热量、单位质量制热量和冷凝压力均比R22系统大,但其压比和排气温度均低于R22系统。
Under the nominal conditions of the heat pump water heater, the perform- ance of heat pump system using R32/R1234yf mixtures as refrigerant is calculated and an- alyzed. The results show that the optimum mass fraction of R32/R1234yf is 60/40, at which the optimum COPh of R32/R1234yf is 4. 727,and the optimum COPh is increased by 8.64% compared to that of R22 system. At the optimum mass fraction, unit volumetric heating capacity, unit mass heating capacity and condensation pressure of R32/R1234yf are higher than those of R22, but pressure ratio and discharge temperature are lower than those of R22.
出处
《制冷与空调》
2016年第12期49-51,14,共4页
Refrigeration and Air-Conditioning
基金
国家自然科学基金资助项目(51176207)
郑州市领军人才计划项目(131PLJRC641)
作者简介
范晓伟，博士，教授，主要研究方向为热泵空调新技术。
