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Experimental investigation of a thermally driven heat pump based on a double organic Rankine cycle and an oil-free compressor-turbine unit.

Author(s) : DEMIERRE J., FAVRAT D., SCHIFFMANN J., et al.

Type of article: Article, IJR article

Summary

This paper presents the experimental investigation of a concept of Thermally Driven Heat Pump (TDHP), based on the coupling of a vapor compression heat pump cycle and an Organic Rankine Cycle (ORC). The studied concept uses a single stage centrifugal compressor directly coupled to a single stage radial inflow turbine. The shaft is rotating on gas bearings, which allows the system to be oil-free. Like most of the other TDHP's, this system has the advantage to work with a variety of fuels or heat sources like wood pellets, natural gas, solar heat, geothermal heat or waste heat. A prototype using R134a as working fluid and with a heating capacity of about 40 kW has been developed. The results of the first tests are presented.

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Pages: 91-100

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Details

  • Original title: Experimental investigation of a thermally driven heat pump based on a double organic Rankine cycle and an oil-free compressor-turbine unit.
  • Record ID : 30011727
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 44
  • Publication date: 2014/08

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