Theoretical study on a novel R32 refrigeration cycle with a two-stage suction ejector

This paper presents a new ejector enhanced vapor compression refrigeration cycle operating with the refrigerant R32. In this cycle, an ejector with two suction inlets is employed to recover the expansion process losses of the cycle. The theoretical model for the developed cycle is established and the performance of this cycle using refrigerant R32 is investigated. Furthermore, the performance comparisons of the developed cycle, basic vapor compression refrigeration cycle and conventional ejector expansion refrigeration cycle have also been carried out. The theoretical study shows that the developed cycle gives a higher cooling (heating) capacity and a higher coefficient of performance. The newly developed cycle could make a contribution for the application of refrigerant R32 in air-conditioner systems.

► A novel ejector enhanced vapor compression refrigeration cycle operating with refrigerant R32 is presented. ► The performances of the novel cycle are theoretically studied in detail. ► The heating (cooling) capacity and coefficient of performance can be improved significantly. ► The novel cycle shows its contribution for the application of refrigerant R32 in air-conditioner systems.