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Effects of film evaporation on laminar mixed convection heat and mass transfer in a vertical channel.

Author(s) : YAN W. M.

Type of article: Article

Summary

The influences of the inlet liquid mass flow rate and the imposed wall heat flux on the film vaporization and the associated heat and mass transfer characteristics were examined for air-water and air-ethanol systems. Predicted results obtained by including transport in the liquid film are contrasted with those where liquid film transport is neglected, showing that the assumption of an extremely thin film is only valid for a system with a small liquid mass flow rate. It is found that the heat transfer between the interface and gas stream is dominated by the transport of latent heat associated with film evaporation. The magnitude of the evaporative latent heat flux may be five times greater than that of sensible heat flux.

Details

  • Original title: Effects of film evaporation on laminar mixed convection heat and mass transfer in a vertical channel.
  • Record ID : 1993-1936
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 35 - n. 12
  • Publication date: 1992/12

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