Exergetic analysis of the vapour compression refrigeration cycle using ejector as an expander
by Mortaza Yari
International Journal of Exergy (IJEX), Vol. 5, No. 3, 2008

Abstract: A computer simulation of the ejector-compression cycle is carried out using a one-dimensional ejector model. In order to identify the amounts and locations of irreversibility within the components of the cycle, exergy analysis is employed. The effects of evaporating temperature and condensing temperature on the COP, second law efficiency and exergy destruction are investigated. It is concluded that the COP and second law efficiency of the ejector-compression is about 16% higher than that for the vapour compression cycle, under the operating conditions of evaporator temperature, 5°C and condenser temperature, 40°C. Also the total exergy destruction of the vapour compression cycle is about 24% higher than that for the ejector-compression cycle at the given conditions.

Online publication date: Fri, 02-May-2008

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