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Screening of non-CFC alternatives for high-temperature heat pumps.

Author(s) : KAZACHKI G., GAGE C.

Summary

Ten pure fluids (R134, R134a, R245cb, R227ea, R236fa, RE134, R236ea, R245fa, R245ca, R123) and three blends are analyzed as refrigerants for high-temperature heat pumps at three sets of evaporating/condensing temperatures: 7/80 deg C, 20/100 deg C, and 30/120 deg C. Aside from the commonly used thermodynamic analytical criteria, design criteria based on R410A scroll air-conditioning and heat-pump compressor are applied: discharge pressure of 3.4 megapascals continuous and 4.1 to 4.5 megapascals short-time, pressure ratio of 10, and isentropic discharge temperature at 130-145 deg C. The heat cost reflecting the market conditions is used to make the final selection.

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Pages: 1997-4

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Details

  • Original title: Screening of non-CFC alternatives for high-temperature heat pumps.
  • Record ID : 1998-1915
  • Languages: English
  • Source: Heat Pump Systems, Energy Efficiency, and Global Warming.
  • Publication date: 1997/09/01

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