光热光电喷射-直接蒸发复合制冷系统性能

提出一种以R134a为制冷剂的光热光电喷射-直接蒸发复合制冷系统,以新疆喀什地区的气象参数为输入,结合Trnsys软件进行建筑模拟和系统仿真计算,分析夏季连续典型气象日内系统的运行情况及其性能.结果表明:直接蒸发冷却系统系数COP_m值最大可以达到15.05;COP_m平均值达到12.33;太阳能喷射制冷系统机械COP_m最大为4.97;复合系统的综合机械性能系数COP_m达到8.52;整个夏季完全用机械压缩制冷系统耗电量为1

Performance of Solar Ejector and Direct Evaporation Combined Refrigeration System Poweredby Photovoltaic Solar Energy

This paper proposed a solar ejector and direct evaporation combined refrigeration system powered by photovoltaic solar energy. This system used R134a as refrigerant, input meteorological parameters in Kashgar Area, Xinjiang, and combined Trnsys simulation software for building simulation and simulation computation of the system, then conducted a comprehensive analysis of operation and thermal performance of the system during consecutive typical meteorological days in summer. The result shows that the maximum COP_m of the direct evaporation refrigeration system can reach 15.05 with the average COP_m 12.33. The maximum mechanical COP_m of the ejector refrigeration is 4.97, and the comprehensive COP_m is 8.52. Morever, power consumption of the mechanical compression refrigeration system is 162.6 kW·h, and the power consumption of the combined system is 65.4 kW·h in summer.