Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: Supplementary 9, Pages: 1-9
V. Natarajan1* and S. Vanitha2
1 Department of Mechanical Engineering, Jeppiaar Engineering College, Chennai - 600119, Tamil Nadu, India
2 Sathyabama University, Chennai - 600119, Tamil Nadu, India; [email protected]
The importance on energy conservation has resulted in new efforts to develop more efficient refrigeration systems for achieving low temperature. The Joule-Thomson (J-T) concept has been widely used for achieving low temperature. The overall performance of the refrigeration system is governed by the selection of the mixture composition and heat exchanger used. Therefore, an attempt has been made to investigate the performance of the Joule–Thomson refrigeration system with the addition of a heat exchanger in between the condenser and the expansion device. In order to study the performance of the system experimentally, a Joule-Thomson refrigeration system experimental setup has been developed with mixture of R290/R600a (40/60, 50/50, 60/40 and 70/30 by weight) are used as environmental friendly refrigerant mixtures and experiments are conducted. The effect of evaporator temperature on the coefficient of performance, exergy efficiency and exergy destruction ratio of the J-T system are investigated. The Joule–Thomson refrigeration system with compact heat exchanger yields higher coefficient of performance by 10.45% and exergy efficiency obtained by 4.25%.
Keywords: Coefficient of Performance, Exergy Destruction Ratio, Exergy Efficiency, Heat Exchanger, Joule–Thomson Refrigeration System
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