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Effect of delay length at the onset of two-phase flow of refrigerant in capillary tube.

Author(s) : GUJRAL I. S., DAVE R. K., GORASIA J. N., et al.

Summary

This work is confined to the design of straight capillary tubes. Actual vapour bubble formation takes place at a longer tube length than predicted by thermodynamic equilibrium conditions. A transition zone has been denoted by delay length, which occurs when the refrigerant enters into the two-phase region from the liquid region. Delay length plays a very important role. The delayed formation of the actual first bubble results in metastability and is responsible for the development of a transition zone at the onset of flash point. The delay length, as dealt in this paper, is a measure of such a transition zone. The paper discusses the effect of input parameters on delay length. Adiabatic slug flow of CFC-12 with no heat exchanger has been considered.

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Details

  • Original title: Effect of delay length at the onset of two-phase flow of refrigerant in capillary tube.
  • Record ID : 2000-1373
  • Languages: English
  • Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Publication date: 1999/09/19

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