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Effect of a turbo-expander for regeneration in the expansion process.

Author(s) : CHO C. H., CHO S. Y., CHOI S. K.

Summary

A turbo-expander is developed for the regeneration in the expansion process. The turbo-expander operates in the partial admission and supersonic flow, and an axial-type single stage turbine is applied to the turbo-expander. Its outer diameter is 82 mm and the operating gas is R-134a. A 15-kW reciprocating compressor is applied in the experiment and the turbo-expander is installed in the expansion process instead of the commonly using expansion valve. One supersonic nozzle is applied for the expansion process. The high speed of R-134a after passing the supersonic nozzles gives the impulse force to the turbo-expander and powers are generated on this process. A generator is installed at the end of the turbo-expander shaft. The generating output power from the turbo-expander is controlled by the power controller. Pressures and temperatures are measured on the refrigerant circulation lines of the experiment utility for the performance investigation. More than 150 W are generated in this experiment.

Details

  • Original title: Effect of a turbo-expander for regeneration in the expansion process.
  • Record ID : 2007-0647
  • Languages: English
  • Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Publication date: 2006/05/21

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