Exergy analysis of industrial waste heat recovery based ejector vapour compression refrigeration system

AbstractThis communication employed a thermodynamic analysis through energy and exergy for the performance evaluation of waste heat recovery based ejector compression refrigeration in which internal heat exchanger and cooler are used to enhance the performance of the cycle. The system is an integration of the Rankine power cycle and the compression refrigeration cycle. A comprehensive parametric study is performed to investigate the effects of exhaust gas inlet temperature, pinch point (PP) and evaporator temperature on the energetic and exergetic coefficient of performance (COP) of the system as well on the exergy destruction in each component. It is shown that the exergetic COP of the system decreases significantly with the increase in exhaust gas temperature and PP, while the energetic COP increases slightly. The effect of evaporator temperature also shows a similar behaviour. It is further shown that the exergetic coefficient of performance of the system is ∼75% lower than the COP of the same system. ...

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