R32制冷系统湿压缩的最佳吸气干度范围
发布时间：2018-12-13 09:31
【摘要】：湿压缩应用于R32制冷系统时能有效降低压缩机排气温度,但是其对系统性能的影响有待研究。在热力循环理论计算分析的基础上,利用变频滚动转子式压缩机制冷循环实验台,通过改变压缩机频率和电子膨胀阀的开度做了一系列实验,研究不同工况下R32制冷系统各项参数的变化趋势,寻找系统最优时吸气干度范围。理论分析表明:吸气带液时系统的性能比吸气过热时要好;从吸气过热到吸气带液,排气温度快速降低,而制冷量和COP先升高后降低,压缩机吸气干度在0.90~0.93内,理论COP存在最大值。实验分析表明:吸气干度在0.96~1.0范围内,制冷量比常规应用中控制过热度5℃时的高5%~10%;排气温度比吸气过热度5℃时的排气温度低8%~16%;COP比吸气过热度5℃时的高5%~8%;系统压比降低,系统性能达到最优。
[Abstract]:Wet compression can effectively reduce the exhaust temperature of the compressor when it is applied to the R32 refrigeration system, but its influence on the performance of the system needs to be studied. On the basis of theoretical calculation and analysis of thermodynamic cycle, a series of experiments have been done by changing the frequency of compressor and opening of electronic expansion valve by using frequency conversion rolling rotor compressor refrigeration cycle test bench. The variation trend of the parameters of R32 refrigeration system under different operating conditions was studied to find out the optimal range of inspiratory dryness of the system. The theoretical analysis shows that the performance of the system with suction fluid is better than that with suction overheating. From inspiratory overheating to aspirating fluid, the exhaust temperature decreases rapidly, while the refrigerating capacity and COP increase first and then decrease. The suction dryness of compressor is within 0.90 ~ 0.93, and the theoretical COP has a maximum value. The experimental analysis shows that in the range of 0.96 鈩，
本文编号：2376319
[Abstract]:Wet compression can effectively reduce the exhaust temperature of the compressor when it is applied to the R32 refrigeration system, but its influence on the performance of the system needs to be studied. On the basis of theoretical calculation and analysis of thermodynamic cycle, a series of experiments have been done by changing the frequency of compressor and opening of electronic expansion valve by using frequency conversion rolling rotor compressor refrigeration cycle test bench. The variation trend of the parameters of R32 refrigeration system under different operating conditions was studied to find out the optimal range of inspiratory dryness of the system. The theoretical analysis shows that the performance of the system with suction fluid is better than that with suction overheating. From inspiratory overheating to aspirating fluid, the exhaust temperature decreases rapidly, while the refrigerating capacity and COP increase first and then decrease. The suction dryness of compressor is within 0.90 ~ 0.93, and the theoretical COP has a maximum value. The experimental analysis shows that in the range of 0.96 鈩，
本文编号：2376319
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