从“部分卸载”对制冷系数的影响看冷库兼冷的利与弊

Analysis of Gains and Losses of Shared Cold Storage Refrigeration System in Terms of the Influence of ‘Partial Relief’ on Refrigerating Efficiency

分别采用解析法和数值法 ,分析了压缩机部分卸载能量调节方式对单级实际制冷循环和 -2 8℃蒸发温度的氨双级实际制冷循环制冷系数的影响 ,指出新系列压缩机所带有的能量调节装置 ,不宜用于季节性负荷变化时的能量调节 ,提出在不同蒸发温度制冷系统之间进行适当的兼冷运行 。

The influence of the partial relief compressor energy regulating method on the refrigerating efficiency of the one stage practical refrigeration system and -28℃ evaporating temperature two stage ammonia practical refrigeration system has been analyzed by analytical and numerical method separately.We point out that the regulating device of the new series compressors is not suitable for being used in seasonal load regulating and using the proper shared evaporating temperature system is a more economical energy regulating method.