Energetic and Exergetic Analysis of a Novel Combined Cooling and Power System by the Integration of Organic Rankine Cycle (ORC) and Ejector Refrigeration System

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Abstract

Energy shortage is one of the fundamental challenges of human beings in which finding a new way for optimum utilization of unique energy resources and cogeneration can be terminated to the reservation of energy or cogeneration purposes. In this paper, by using the combined Ejector Refrigeration Cycle (ERC) and Organic Rankine Cycle (ORC), in addition to producing power from Organic Rankine Cycle, we will use the waste heat recovery of condenser in the ORC for the purposes of generating cooling capacity in the ERC. Actually, the condenser of the ORC works as the evaporator of the ERC. We have considered isobutane as a working fluid of ERC and also R113, R141b, R11, R123, R245fa, R114, and isobutane as working fluids of ORC. The maximum Combined Cycle Performance is obtained when we would use isobutane and R113 as working fluids in ERC and ORC, respectively. In this case, ORC Efficiency, Combined Cycle Efficiency, and Cycle Coefficient of performance will be 19.97%, 34.69% and 0.3683, respectively.In addition to energetic analysis’ point of view, from the exergetic analysis’ one, the combined usage of R113 and isobutene by having the highest efficiency of 52.53% is an appropriate working fluids, too. Also a parametric analysis is performed for the cycle performances, based on the operational parameters of combined cycle.

Keywords

Energy Engineering and Management
Volume 6, Issue 2
September 2016
Pages 60-73

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