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Experimental research on a geothermal heat pump system with non-azeotropic working fluids.

Author(s) : ZHAO P. C., ZHAO L., DING G. L., et al.

Type of article: Article

Summary

The authors explain how to solve the problem of heating in some areas and making optimal use of geothermal waste water through a heat pump. Now the biggest barrier is to find suitable working fluids which can work under conditions of 80-100 °C (condensation temperature) and 25-35 °C (evaporation temperature), and at the same time keep the highest pressure in the system under 2500 kPa. Experimental results showed that new working fluids R123/R290 (50/50 by mass %) and R123/R290/R600a (40/50/10 by mass %) will meet the requirement of the new working conditions. The coefficient of performance of the geothermal heat pump system using the working fluids is above 3.0 with condensation temperature above 80 °C and condensation pressures below 2500 kPa. At the end of the article, some improvements are proposed.

Details

  • Original title: Experimental research on a geothermal heat pump system with non-azeotropic working fluids.
  • Record ID : 2003-3056
  • Languages: English
  • Subject: General information
  • Source: Applied Thermal Engineering - vol. 22 - n. 15
  • Publication date: 2002/10

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