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Pure vapour condensation of refrigerants 11 and 113 on a horizontal integral finned tube at high vapour velocity.

Author(s) : BELLA B., CAVALLINI A., LONGO G. A., ROSSETTO L.

Type of article: Article

Summary

The experimental apparatus for measuring heat transfer coefficients during condensation of halogenated refrigerants on a single horizontal finned tube is presented. Two different series of experimental runs, relative to R11 and R113 respectively, have been carried out under vapour velocity ranging from 2 to 30 m/s. Present experimental data show a heat transfer enhancement due to vapour shear stress: at the highest vapour velocity there is a 50% increase in the heat transfer coefficient with respect to values measured during condensation of stagnant vapour. The enhancement starts to be evident when the vapour Reynolds number is greater than 100,000. Present experimental data are compared with the most recent theoretical models.

Details

  • Original title: Pure vapour condensation of refrigerants 11 and 113 on a horizontal integral finned tube at high vapour velocity.
  • Record ID : 1994-2834
  • Languages: English
  • Source: J. enhanced Heat Transf. - vol. 1 - n. 1
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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