太阳能辅助热源R290喷射制冷循环性能分析.pdf

太阳能辅助热源的R290 喷射制冷循环的性能分析 宁静红 刘圣春 彭苗 李慧宇 （天津商业大学天津市制冷技术重点实验室，天津300134） 摘 要：设计了由太阳能集热循环，R290 喷射制冷循环组成的太阳能辅助热源的R290 蒸气喷 射制冷循环，通过热力计算得出，随着蒸发温度的升高，喷射器引射率的增大，发生器出口 R290 蒸气温度的升高，冷凝温度的降低，太阳能保证率的增加，太阳能辅助热源的R290 喷射 制冷循环的性能系数增大。并与常规R290 蒸气压缩制冷循环比较得出，太阳能辅助热源的R290 蒸气喷射制冷循环具有明显的优势。根据具体的运行工况和运行环境，开发高效的太阳能集热 器和喷射器，减少系统的初投资，节省运行费用，节约能源，保护环境，太阳能辅助热源的 R290 喷射制冷循环具有良好的前景。 关键词：太阳能 R290 喷射 制冷循环 性能分析 Performance Analysis on R290 Ejecting Refrigeration cycle by Solar Energy-Driven NING Jinghong LIU Shengchun Peng Miao Li Huiyu (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China) Abstract ：The refrigeration cycle of solar energy–driven R290 vapor ejecting composed of solar energy heat-collecting cycle and R290 vapor ejecting refrigeration cycle is designed. By thermodynamic calculations, the results are obtained that the COP of the refrigeration cycle of solar energy–driven R290 vapor ejecting increases as the increasing of the evaporation temperature, the entrainment ratio of the ejector, the R290 vapor temperature of generator outlet and the assuring ratio of solar energy, moreover as the reducing of the condensation temperature. Furthermore, by comparing the refrigeration cycle of solar energy–driven R290 vapor ejecting with the conventional R290 vapor compression refrigeration cycle, it is concluded that the refrigeration cycle of solar energy–driven R290 vapor ejecting has obvious advantages. Based on the running condition and environment, developing the high-performance solar energy collector and ejector for decreasing the cycle invest, saving running cost, saving energy and protecting environment, the refrigeration cycle of solar energy–driven R290 vapor ejecting has good fut