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Thermal and economic modeling and optimization of a novel combined ejector refrigeration cycle.

Author(s) : SANAYE S., EMADI M., REFAHI A.

Type of article: Article, IJR article

Summary

To increase the coefficient of performance of a simple vapor-vapor ejector refrigeration cycle, this cycle is combined with a simple liquid-vapor ejector refrigeration cycle. The new combined ejector refrigeration cycle is modeled in energy, exergy, environmental and economic aspects. Then two-objective optimization of this cycle (with exergy efficiency and total annual cost as two objective functions) is performed and optimum values of five design parameters for combined vapor–vapor and liquid-vapor ejector refrigeration cycle are obtained. Moreover, from three different refrigerants for vapor-vapor ejector cycle and four different refrigerants for liquid-vapor ejector cycle (sum of twelve different cases), two refrigerants are also selected for combined vapor–vapor and liquid-vapor ejector cycle at the optimum point. Analysis of the new proposed cycle shows 18% higher coefficient of performance, 25% higher exergy efficiency, 31% lower electricity consumption and 8% lower annual cost for a specific cooling capacity in comparison with another combined (hybrid) ejector-compressor refrigeration cycle.

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Pages: 480-493

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Details

  • Original title: Thermal and economic modeling and optimization of a novel combined ejector refrigeration cycle.
  • Record ID : 30025420
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 98
  • Publication date: 2019/02
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.11.007

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