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Experimental investigation on a hermetic scroll expander.

Author(s) : LEMORT V., QUOILIN S., PIRE C.

Summary

This paper presents the results of an experimental study carried out on a prototype of hermetic scroll expander, integrated into a gas cycle test rig, whose working fluid is R245fa. This system was designed to test only the performance of the expander. It is mainly made up of a scroll compressor, a scroll expander, a heat exchanger and a by-pass valve. The latter is used to adjust the pressure ratio imposed to the expander. The expander is originally a compressor used for heat pump applications and characterized by a nominal power input of 2.5 kW. Performance of the expander is evaluated in terms of isentropic effectiveness and filling factor as function of the main operating conditions. The study also investigates the impact of oil mass fraction on the expander performance. Using the experimental data, parameters of a simulation model of the expander are identified. The model is finally used to analyze the measured performance of the expander.

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Pages: 2009-6

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Details

  • Original title: Experimental investigation on a hermetic scroll expander.
  • Record ID : 2009-2333
  • Languages: English
  • Source: Compressors 2009: 7th International Conference on Compressors and Coolants
  • Publication date: 2009/09/02

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