设计并搭建了喷射制冷系统性能研究实验台, 选取水作为制冷剂进行喷射制冷实验.主要研究工况条件（工作蒸汽温度、蒸发温度、冷凝压力）、喷射器结构（等截面积段长度和喷嘴出口与喷嘴喉部的面积比）对系统COP的影响.研究结果可进一步了解喷射式制冷的工作原理，为改进和提高蒸汽喷射式制冷系统性能提供参考.

An ejector refrigeration system is built and water is selected as the working fluid. The effects of operating conditions including the working fluid temperature, evaporation temperature and condensing pressure, and spray structure including constant area section and the area ratio of nozzle throat and the nozzle outlet on system COP are investigated. The results can provide reference for further understanding the working principle of the ejector and improving the performance of the steam ejector refrigeration system.