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Measurement and prediction of two-phase flow patterns for new refrigerants inside horizontal tubes.

Author(s) : KATTAN N., THOME J. R., FAVRAT D.

Summary

Two-phase flow pattern data were obtained with 12 mm-bore sight glasses for five refrigerants: R123, R134a, R502, R402A and R404A. The existing flow pattern maps of Taitel and Dukler (1976) and Hashizume (1983) poorly represented the data, while, with the exception of mist flows, the VDI map identified the flow patterns successfully. Methods used in horizontal flow boiling correlations to determine the threshold between all wet wall and partially wet wall flows were shown to be unreliable.

Details

  • Original title: Measurement and prediction of two-phase flow patterns for new refrigerants inside horizontal tubes.
  • Record ID : 1997-0699
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/06/24
  • Document available for consultation in the library of the IIR headquarters only.

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