R1234ze/HCs非共沸混合工质热泵系统循环性能分析  

Performance Evaluation of Heat Pump System Using Non-azeotropic Refrigerant Blends R1234ze/HCs

作　　者：王方[1] 袁秋艳 王帅琪 李志强[1] 王鹏超 Wang Fang;Yuan Qiuyan;Wang Shuaiqi;Li Zhiqiang;Wang Pengchao(School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou,450007,China)

机构地区：[1]中原工学院能源与环境学院

出　　处：《制冷学报》2020年第1期26-31,共6页Journal of Refrigeration

基　　金：国家自然科学基金(U1504501);高端外国专家项目(GDW20164100039)资助项目;河南省高校科技创新人才支持计划项目(20HASTIT019)资助~~

摘　　要：在热泵热水器名义工况下,本文建立了热泵系统循环热力学模型,利用EES程序对混合工质R1234ze/HCs及对应的纯工质热泵系统循环性能进行了对比分析。结果表明:R1234ze/R600在质量分数(20/80)和R1234ze/R600a在质量分数(40/60)存在最优配比,对应的最大制热COP_h分别为3. 41和3. 32,而R1234ze/R290则呈现单调下降趋势。R1234ze/R600(20/80)系统的制热COP_h比R1234ze/R600a(40/60)、R1234ze、R290、R600、R600a系统分别高2. 7%、17%、0. 09%、16. 3%和17. 8%,排气温度为76. 9℃,冷凝压力为0. 711 MPa,压比为6. 32,有望成为新型替代工质。The thermodynamic model of a heat pump system was established under the nominal working conditions of heat pump water heater in this paper. A comparative analysis was made between the refrigerant blends R1234ze/HCs and the corresponding pure refrigerant through the EES program. The results show that the R1234ze/R600 blend has the best ratio in a mass fraction of(20/80) and R1234ze/R600 a in mass fraction of(40/60). The corresponding maximum heating coefficient of performance(COP) are 3.414 and 3.321,respectively. The COP of R1234ze/R290 blend,however,exhibits monotonicity with the change of mass fraction. The heating COP of the R1234ze/R600(20/80) system is 2. 7%,17%,0. 09%,16. 3%,and 17. 8% higher than that of the R1234ze/R600 a(40/60),R1234ze,R290,R600,and R600 a systems,respectively. The discharge temperature,condensing pressure and compression ratio of the R1234ze/R600(20/80) system are 76.9 ℃,0.711 MPa and 6.32,respectively. The results are promising for the development of a prospective alternative working fluid.

关 键 词：R1234ze/HCs 混合工质 最优配比 热泵 循环特性 

分 类 号：TB612[一般工业技术—制冷工程] TQ051.5[化学工程]