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太阳能喷射制冷系统具有变工况间歇性工作特点,优良制冷工质特性是太阳能喷射制冷系统获得良好循环性能至关重要条件。因此,优化选择绿色环保替代工质对扩大太阳能喷射制冷系统工作温区和寻找太阳能喷射制冷系统的最佳变工况工作特性具有重要理论意义。文中在建立改进型太阳能喷射制冷系统热力学模型基础上,研究了以R161、R1234yf、R152a、R290、R134a及R600a为制冷剂的太阳能喷射制冷系统变工况热力学特性。结果表明,以R161为制冷剂的太阳能喷射制冷系统的性能系数平均(COP)值最高,其变工况循环性能明显优于R134a和R600a等制冷工质;绿色环保新型制冷剂R161是适用于喷射制冷系统变工况运行的优良替代工质。
Solar injection refrigeration system has the characteristics of intermittent intermittent work conditions, excellent refrigerant characteristics of the solar injection refrigeration system to obtain a good cycle performance is crucial. Therefore, optimizing and selecting green alternative refrigerants is of great theoretical significance for expanding the operating temperature range of the solar injection refrigeration system and finding the optimum working condition of the solar injection refrigeration system. Based on the establishment of the thermodynamic model of the improved solar injection refrigeration system, the thermodynamic characteristics of the solar injection refrigeration system with R161, R1234yf, R152a, R290, R134a and R600a as refrigerants are studied. The results show that the performance coefficient (COP) of the solar injection refrigeration system with R161 as the refrigerant is the highest, and its cycling performance is obviously better than that of R134a and R600a. The new environmentally friendly refrigerant R161 is suitable for injection Refrigeration system to change the working condition of good alternative refrigerant.