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Improvement of a CO2 automotive air conditioning system performance by applying combined expander-compressor.

Number: pap. F23

Author(s) : CHOI J. W., LIM J. T., KIM H. J.

Summary

For a CO2 automotive air conditioning system, a combined design of compressor and expander was introduced in order to improve the cycle performance. Both of the compressor and expander are rotary vane types, and designed to share a common shaft in a housing. Numerical simulation was carried out to evaluate the merit of the combined unit. At a typical automotive air conditioning operating condition with Tcooler-exit = 46.3°C and Teva = 7.5°C, COP of the system was calculated to be improved by 7.11% by the application of the combined unit. The compressor input was reduced by 4.11% by the expander output. and about 2.72% increase in the cooling capacity was obtained by isentropic expansion in the expander.

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Pages: 8

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Details

  • Original title: Improvement of a CO2 automotive air conditioning system performance by applying combined expander-compressor.
  • Record ID : 30022117
  • Languages: English
  • Source: 8th international conference on compressors and refrigeration, 2017.
  • Publication date: 2017/07/20

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