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H2O refrigerant: exploitation of dispersed water droplets.

Author(s) : CHEN K.

Summary

To cope with the mandates imposed by the Montreal and the Kyoto Protocols, halogenated refrigerants will eventually be phased-out. H2O, a natural working fluid which is environmental-friendly, chemically non-corrosive, non-flammable, and physiologically harmless, can be exploited as a high-performance refrigerant in the 4 to -25°C temperature range. The successful operation of the water refrigeration system is based on the fact that the evaporation rate of the refrigerant is not controlled thermodynamically but kinetically. The refrigeration performance of micron-sized water droplets in a reduced pressure environment has been successfully demonstrated. A testing embodiment could be cooled down from room temperature to -20°C within 6 minutes, where tap water at a flow rate of 80 mL/min was dispersed into micron-sized droplets by the liquid jet atomization technique. The exploitation of the water refrigerant in replacement of those with environmental and safety concerns is highly expected.

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Pages: ICR07-B1-135

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Details

  • Original title: H2O refrigerant: exploitation of dispersed water droplets.
  • Record ID : 2007-2487
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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