Thermal Design & Performance Of Combined Vapour Compression-Ejector Refrigeration System Using R600a

摘要

Combined vapour compression-ejector refrigeration system is proposed which uses the waste heat of condesor of simple vapor compression system and this heat is utilized to drive the binary ejector refrigeration system. The cooling effect produced by this binary system can be considered as input to the cooling effect of basic vapour compression system. Thermal design of this combined vapour compression-ejector refrigeration system(VCR-VER) is based on energy and mass conservation in each component. The system performance is first analyzed for the on design conditions. The results show that the COP is improved by 3.086% for the proposed system. The system is then analyzed for variation of four important variables. MATLAB Simulink software is used to model the combined VCR-VER system. The system analysis shows that this refrigeration system can effectively improve the COP by the ejector cycle with the refrigerant which has high compressor discharge temperature