@article{(Open Science Index):https://publications.waset.org/pdf/16072, title = {Parametric Study of a Vapor Compression Refrigeration Cycle Using a Two-Phase Constant Area Ejector}, author = { E. Elgendy}, country = {}, institution = {}, abstract = {There are several ways of improving the performance of a vapor compression refrigeration cycle. Use of an ejector as expansion device is one of the alternative ways. The present paper aims at evaluate the performance improvement of a vapor compression refrigeration cycle under a wide range of operating conditions. A numerical model is developed and a parametric study of important parameters such as condensation (30-50°C) and evaporation temperatures (-20-5°C), nozzle and diffuser efficiencies (0.75-0.95), subcooling and superheating degrees (0-15K) are investigated. The model verification gives a good agreement with the literature data. The simulation results revealed that condensation temperature has the highest effect (129%) on the performance improvement ratio while superheating has the lowest one (6.2%). Among ejector efficiencies, the diffuser efficiency has a significant effect on the COP of ejector expansion refrigeration cycle. The COP improvement percentage decreases from 10.9% to 4.6% as subcooling degrees increases by 15K. }, journal = {International Journal of Mechanical and Mechatronics Engineering}, volume = {7}, number = {8}, year = {2013}, pages = {1640 - 1646}, ee = {https://publications.waset.org/pdf/16072}, url = {https://publications.waset.org/vol/80}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 80, 2013}, }