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Vacuum boiling in a water vapour refrigeration system.

Author(s) : SHEER T. J., MITCHLEY S. R.

Summary

The aim of this experimental project was to describe the factors controlling the vacuum boiling of water in direct-contact evaporators for water vapour refrigeration systems. The compression device used for testing was a 2-kilowatt three-stage steam jet ejector system with direct-contact interstage condensers with barometric legs. Three evaporators were used in the experimental programme. The nature of boiling in direct-contact vacuum systems is described. Various forms of heat and mass transfer coefficients are presented, together with their applicability to evaporator design. The vacuum boiling process is governed by a combination of the water surface temperature and the hydrostatic pressure gradient.

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Pages: p 53-62

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Details

  • Original title: Vacuum boiling in a water vapour refrigeration system.
  • Record ID : 1999-2852
  • Languages: English
  • Source: Natural Refrigerants, Energy Efficiency, Cost and Safety. Natural Working Fluids '98. IIR-Gustav Lorentzen Conference.
  • Publication date: 1998/06/02
  • Document available for consultation in the library of the IIR headquarters only.

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