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Effect of oil on R134a condensation in parallel flow condensers.

Author(s) : ZHANG M., WEBB R. L.

Summary

The paper reports tests to determine the effect of R134a-oil mixtures on condensation in a 1.32 millimeter hydraulic diameter extruded aluminium tube used in automotive refrigerant condensers. At low vapour qualities, oil increases the condensation coefficient (h), and at vapour qualities above 50%, oil reduces the h-value. The h-reduction is more severe at increased oil content. Oil increases the pressure gradient, and the pressure-gradient increase is more severe at higher oil concentration.

Details

  • Original title: Effect of oil on R134a condensation in parallel flow condensers.
  • Record ID : 1999-3847
  • Languages: English
  • Source: 1997 VTMS 3, Vehicle Thermal Management Systems Conference proceedings.
  • Publication date: 1997/05/19
  • Document available for consultation in the library of the IIR headquarters only.

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