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Development of innovative plate heat exchangers for refrigeration applications.

Author(s) : LONGO G. A., GASPARELLA A., SARTORI R.

Summary

The paper presents the experimental work carried out to apply the enhanced surfaces widely used for in-tube refrigerant condensation and vaporization, such as micro-fin and cross-grooved, into plate heat exchangers (PHE). The paper also investigated the effect of an increase in the surface roughness of the plate on the heat transfer performance during refrigerant vaporization. The enhanced surfaces were experimentally evaluated both in vaporization and condensation tests and compared with a traditional PHE surface. The experimental facility and the test procedures are fully described. The experimental results showed that the increase in surface roughness is useful only in vaporization, whereas the cross-grooved surface is useful both in vaporization and condensation. The cross-grooved surface gives an increase in the heat transfer performance from 40% in vaporization to 50% in condensation with respect to a traditional PHE surface.

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Details

  • Original title: Development of innovative plate heat exchangers for refrigeration applications.
  • Record ID : 2004-1096
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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