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Water chilling and ice making with water as refrigerant.

Author(s) : PAUL J., JAHN E.

Summary

Water as refrigerant can be used to chill water or to generate a liquid, pumpable ice (binary ice). The vital part of such plants is the water vapour compressor which is characterised by a very large swept volume and high pressure ratio. Starting with a 150 kilowatts unit, a "family" of axial water vapour compressors is in the course of final design and in the near future a capacity range for chillers from some 150 kilowatts until 4,500 kilowatts will be available. Since the water-process requires no heat exchangers the COP of such plants is very good and remains constant. Instead of using sensible cooling it is possible to apply a two-phase liquid containing minute ice crystals suspended in an aqueous solution. This fluid is a liquid, pumpable ice (binary ice) which again can be produced with the water vapour process within a capacity range of 3-3.000 kilowatts. Until today 44 megawatts of cooling capacity have been installed and are successfully in operation. Large ice plants with 7 megawatts have already been built to cool deep mines.

Details

  • Original title: Water chilling and ice making with water as refrigerant.
  • Record ID : 1997-2743
  • Languages: English
  • Source: International Conference on Ozone Protection Technologies. Conference proceedings.
  • Publication date: 1996/10/21
  • Document available for consultation in the library of the IIR headquarters only.

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