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Low temperature waste heat power recovery using refrigeration equipment.

Author(s) : BRASZ J. J., BIEDERMAN B. P.

Summary

The paper describes the development of a bottoming cycle system enhancing the efficiency of distributed gas power generation equipment such as micro turbines and recipe engine gensets. This so-called Organic Rankine Cycle (ORC) is a vapour power cycle with refrigerant (an organic fluid) instead of water/steam as the working fluid. Functionally it resembles the steam cycle power plant: a pump increases the pressure of condensed liquid refrigerant. This liquid is vaporized in an evaporator/boiler by extracting waste heat from the turbine or engine exhaust. The high-pressure refrigerant vapour expands in a turbine, producing power. The low-pressure vapour leaving the turbine is condensed before being sent back to the pump to restart the cycle. For refrigerants with certain properties, commercially available air-conditioning and refrigeration equipment with its proven reliability and performance record can be used cost-effectively in a power producing ORC system.

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Details

  • Original title: Low temperature waste heat power recovery using refrigeration equipment.
  • Record ID : 2004-1020
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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