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Impact of channel geometry on two-phase flow heat transfer characteristics of refrigerants in microchannel heat exchangers.

Author(s) : RAVIGURURAJAN T. S.

Type of article: Article

Summary

The results indicate that the heat transfer coefficient and pressure drop are functions of the flow quality, the mass flux and of course, the heat flux and the related surface superheat. The heat transfer coefficient decreases from a value of 12,000 to 9000 watts/(m2.K) at 80 deg C, when the wall superheat is increased from 10 to 80 deg C. The coefficient decreases by 30 percent when the exit vapour quality is increased from 0.01 to 0.65.

Details

  • Original title: Impact of channel geometry on two-phase flow heat transfer characteristics of refrigerants in microchannel heat exchangers.
  • Record ID : 1999-1489
  • Languages: English
  • Source: J. Heat Transf. - vol. 120 - n. 2
  • Publication date: 1998/05
  • Document available for consultation in the library of the IIR headquarters only.

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