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Performance evaluation of absorption cooling assisted transcritical CO2 refrigeration systems.

Author(s) : GURUCHETHAN A. M., REDDY Y. S. K., MAIYA M. P., HAFNER A.

Type of article: IJR article

Summary

Studies have shown appreciable improvements in system performance by subcooling the working fluid in transcritical CO2 refrigeration systems. The use of a dedicated vapour absorption refrigeration system (VARS) for subcooling the high side working fluid downstream of the heat rejection device is proved to be a viable option. The heat available in the discharged gas downstream of the compressor in the transcritical CO2 system is used to drive a LiBr-H2O VARS. This study examines the performance of an absorption cooling-assisted transcritical CO2 system. Three different configurations of the absorption system are considered, namely, single effect (SE), series double effect (DE), and series double effect with dual heat input (DEDH). The performance analysis is carried out for gas cooler exit temperatures (Tgc) ranging from 30 to 50 °C and evaporation temperatures ranging from -10 to 5 °C. The average COP improvement of the CO2 system is found to be 29 and 27% using SE and DEDH systems respectively.

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Pages: 362-374

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Details

  • Original title: Performance evaluation of absorption cooling assisted transcritical CO2 refrigeration systems.
  • Record ID : 30032069
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 155
  • Publication date: 2023/11
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2023.09.012

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