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The effect of oil on the two-phase critical flow of R134a through short tube orifices.

Author(s) : KIM Y., O'NEAL D. L.

Type of article: Article

Summary

An experimental investigation of two-phase flow of mixtures of R134a with 168 SUS (Saybolt-universal-seconds)/ISO 32 polyalkylene glycol oil through short-tube orifices was performed for oil concentrations ranging from 0 to 5.1%. Both two-phase and subcooled liquid flow entering short tubes were studied for an upstream pressure of 1172 kilopascals, for subcoolings as high as 13.9 K, and for qualities as high as 8% at the inlet of the short tube. Downstream pressures were varied from saturation pressure to 310 kilopascals. The observed flow trends were analyzed using pressure profile measurements and visualization tests.

Details

  • Original title: The effect of oil on the two-phase critical flow of R134a through short tube orifices.
  • Record ID : 1995-1560
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 37 - n. 9
  • Publication date: 1994/06

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