Novel ejector refrigeration system without pump

The traditional ejector refrigeration system is low in COP value and poor in economy. Presents a novel ejector refrigeration system of pumpless cycle. Compared to the traditional system, the novel ejector refrigeration system applies a gas-to-gas ejector. Presents the working flow of the novel system, develops the simulation model, and analyses the working performance of the novel system. The results show that the COP value is improved by more than 20% for the novel system compared to the traditional system on condition of compression ratio higher than 8.