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Experimental study on condensation heat transfer enhancement and pressure drop penalty factors in four microfin tubes.

Author(s) : HAN D., LEE K. J.

Type of article: Article

Summary

Heat transfer and pressure drop characteristics of four microfin tubes were experimentally investigated for condensation of refrigerants R134a, R22, and R410A in four different test sections. The microfin tubes examined during this study consisted of 8.92, 6.46, 5.1, and 4 mm maximum inside diameter. The effect of mass flux, vapour quality, and refrigerants on condensation was investigated in terms of the heat transfer enhancement factor and the pressure drop penalty factor. The pressure drop penalty factor and the heat transfer enhancement factor showed a similar tendency for each tube at given vapour quality and mass flux. Based on the experimental data and the heat-momentum analogy, correlations for the condensation heat transfer coefficients in an annular flow regime and the frictional pressure drops are proposed.

Details

  • Original title: Experimental study on condensation heat transfer enhancement and pressure drop penalty factors in four microfin tubes.
  • Record ID : 2006-0657
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 48 - n. 18
  • Publication date: 2005/08

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