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Two-phase flow of R22 through short-tube orifices.

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

Summary

Measurements were made on short-tube orifices with short-tube length-to-diameter ratio between 5 and 20 for R22 in a 9.53 mm refrigerant line. Data were collected for upstream pressures ranging from 1,45 to 2 megapascals and for qualities as high as 10% and subcoolings as high as 13.9 deg C. A mass flow model and flow charts were developed by empirically correcting the modified single-phase orifice equation to satisfy the short-tube orifice flow. For normal heat pump operating conditions, the mass flow rate was dependent on upstream pressure and upstream subcooling, but it was insensitive to downstream pressure due to approximate choking.

Details

  • Original title: Two-phase flow of R22 through short-tube orifices.
  • Record ID : 1995-2210
  • Languages: English
  • Source: Heat pumps in cold climates. Proceedings of the second international technical conference.
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

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