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Effect of oil on the boiling performance of structured and porous surfaces.

Author(s) : ZARNESCU V., WEBB R. L., CHIEN L. H.

Type of article: Article

Summary

R134a at 26.6 °C with 1, 2.5 and 5% polyester-ester oil concentration by mass was used as the working fluid. Pore diameter was not a major factor for the oil degradation of boiling performance. Tubes with 50 fins/in (0.51 mm fin spacing) and 0.9 mm fin height had a smaller oil degradation than the Turbo-B surface. The rectangular fin base substantially enhanced the boiling performance in pure refrigerant but in the presence of oil, this geometry performed poorly. For 5% oil concentration, the porous surface had a performance degradation similar to the Turbo-B tube.

Details

  • Original title: Effect of oil on the boiling performance of structured and porous surfaces.
  • Record ID : 2001-0702
  • Languages: English
  • Source: HVAC&R Research - vol. 6 - n. 1
  • Publication date: 2000/01
  • Document available for consultation in the library of the IIR headquarters only.

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