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Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator-freezer.

Author(s) : YOON W. J., JUNG H. W., CHUNG H. J., et al.

Type of article: Article, IJR article

Summary

A two-circuit cycle with parallel evaporators (called a "parallel cycle") for a domestic refrigerator-freezer (RF) shows energy saving potential compared with a conventional cycle with a single loop or serial evaporators because of a low compression ratio in the fresh food compartment (R)-operation. The objective of this study is to investigate the effects of the refrigerant charge, R-capillary tube, and refrigerant recovery operation on the performance of a parallel cycle. In addition, design guidelines for the heat transfer area and air flow rate of an R-evaporator are proposed. When the parallel cycle was optimized in terms of the refrigerant charge and R-capillary tube diameter, the energy consumption was reduced by 7.8% over a bypass two-circuit cycle with the same RF platform. In addition, an additional energy saving of 1.8% was obtained by the optimization of the operating sequence and refrigerant recovery operation.

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Pages: pp. 216-224

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Details

  • Original title: Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator-freezer.
  • Record ID : 2010-1500
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 1
  • Publication date: 2011/01

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