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Vacuum freezing vapour compressor process (VFVC) for mine cooling.

Author(s) : OPHIR A., KOREN A.

Summary

The VFVC process was originally invented for the purpose of seawater desalination. The unique thermodynamic advantages of this process include: direct-contact heat exchange, very high heat transfer coefficients, low-energy consumption, and the elimination of metal heat exchangers. They can be applied for cooling and heating, yielding very high COP and eliminating CFCs, ammonia and other refrigerants. The paper presents this process for cooling and air conditioning. A very large vapour compressor (320 m3/sec) with a large compression ratio (8:1) has been economically developed and placed in operation. Four VFVC ecologically clean vacuum ice maker units, each with a capacity of 3 MWref, are supplying ice at the deepest gold mine in South Africa, for air conditioning at working sites about 4 kilometres below ground.

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Details

  • Original title: Vacuum freezing vapour compressor process (VFVC) for mine cooling.
  • Record ID : 2000-1546
  • Languages: English
  • Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Publication date: 1999/09/19

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