Performance analysis of dual-evaporator ejector refrigeration system in different configurations: Experimental investigation

Authors : Batuhan ÜĞÜDÜR, Ümit İŞKAN, Mehmet DİREK

Pages : 315-330

Doi:10.58559/ijes.1291259

View : 77 | Download : 43

Publication Date : 2023-09-22

Article Type : Research Paper

Abstract :This study aimed to assess the effectiveness of an ejector refrigeration cycle, using a laboratory-scale experimental system operating in different configurations. The investigated configurations consisted of a conventional vapour compression refrigeration insert ignore into journalissuearticles values(CVCR); system and a dual evaporator ejector system insert ignore into journalissuearticles values(DEES); operated in two modes: DEES with a single thermal expansion valve insert ignore into journalissuearticles values(DEESA); and DEES with dual thermal expansion valves insert ignore into journalissuearticles values(DEESB);. The findings revealed that the utilization of the ejector enhanced the refrigerant\`s mass flow rate. Additionally, the DEESA configuration achieved higher cooling capacities compared to the CVCR. Moreover, the DEESA configuration achieved up to 21% higher coefficient of performance insert ignore into journalissuearticles values(COP); values. On the other hand, when the system was operated in the DEESB configuration, it yielded lower evaporation temperatures and higher superheating degrees in comparison to DEESA. Based on the evaluations, it can be concluded that the ejector operates more efficiently in systems with dual evaporators, thereby making positive contributions to overall system performance.
Keywords : Ejector, TXV, COP, Dual Evaporator