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Experimental investigation of the performance of an R1270/CO2 cascade refrigerant system.

Author(s) : ZHANG Y., HE Y., WANG Y., WU X., JIA M., GONG Y.

Type of article: IJR article

Summary

Herein, we proposed a cascade refrigerant system with R1270 and carbon dioxide refrigerants. The natural refrigerant R1270 was adopted in the high-temperature circuit to replace NH3 and R290. A prototype cascade refrigerant system with two semi-hermetic piston compressors was manufactured, and its performance was investigated experimentally. The results establish R1270 as a good alternative in the high-temperature circuit of the cascade refrigerant system. Moreover, with a constant condensation and evaporation temperature of cascade system, as the R1270 evaporation temperature was decreased (from −7 °C to −19 °C), the coefficient of performance (COP) of the cascade system increased. The isentropic efficiency of R1270 compressor decreased from 78.5% to 74.7% when the R1270 evaporation temperature increased from −19 °C to −7 °C.

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Pages: 175-180

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Details

  • Original title: Experimental investigation of the performance of an R1270/CO2 cascade refrigerant system.
  • Record ID : 30027456
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 114
  • Publication date: 2020/06
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.02.017

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