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A non-ozone depleting refrigerant for moderately high-temperature heat pumps: HTR04.

Author(s) : ZAN C., SHI L.

Summary

A non-ozone depleting ternary mixture of R-134a/R-227ea/R-245fa, named HTR04 (high temperature refrigerant 04), for moderately high temperature heat pumps, was developed. The material compatibility and oil miscibility demonstrate that this mixture could be used with R-134a compressor in an HTR04 heat pump system. HTR04 was filled in a 2.92 kW water source heat pump to study the system performance. The results show that the condenser outlet water temperature could reach and hold 82°C with a high coefficient of performance; meanwhile, the condenser pressure is less than 2.2 MPa. The fractionation for HTR04 was simulated and evaluated. Furthermore, the optimal match was studied between temperature glide of HTR04 and difference of water temperature in condenser. For better system performance, the experimental results suggest that the temperature difference of water in the condenser should be close to the glide of HTR04.

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Pages: ICR07-E2-363

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Details

  • Original title: A non-ozone depleting refrigerant for moderately high-temperature heat pumps: HTR04.
  • Record ID : 2007-2490
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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