The suction state of the compressor significantly influences the system's performance.Through theoretical and experimental methods,the aim is to explore the variations in system performance under different suction conditions,seeking to identify the suction state that achieves the optimal operation of the system.Utilizing a small-scale water-cooled chiller experimental system,the flow of refrigerant in the system was controlled by adjusting the opening of the electronic expansion valve,thereby experimentally investigating the influence of the suction state on the performance of the refrigeration system.The results indicate that during the transition of the suction state from superheated to a two-phase gas-liquid state,the refrigeration capacity of the system initially increases and then decreases.Simultaneously,the power consumption of the compressor slightly rises initially,followed by a gradual decline.The change in discharge temperature shows a two-stage reduction,especially when the suction reaches the two-phase state,with a more pronounced cooling effect.When the vapor quality at suction is between 0.98 and 1.00,the system achieves optimal refrigeration capacity and coefficient of performance COP,significantly enhancing the overall performance and economic benefits of the refrigeration system.These findings are of paramount importance for addressing compressor lubricating oil carbonization issues under harsh operating conditions and optimizing refrigeration systems.
关键词
热力学性质/排气温度/系统优化/湿压缩/压缩机
Key words
thermodynamic properties/exhaust gas temperature/system optimization/wet compression/compressor
维普
万方数据