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Heat Transfer from a Local Heat Source to Subcooled Liquid Film

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Abstract

An experimental investigation is performed of heat transfer from a local heat source to films of water and low-boiling dielectric liquid that flow down a vertical plate by gravity. The liquids are substantially subcooled. In the case of perfluorotriethylamine flow, regular structures are formed in the film at the threshold value of the heat flux density. After the heated layer of liquid comes to the film surface, three characteristic modes of heat transfer are observed, which are associated with the variation of the modes of liquid flow caused by thermocapillary convection. At low values of the Reynolds number of the film, a specific form of critical heat transfer is observed, which is characterized by disintegration of the jet into droplets and their separation from the heater.

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Authors and Affiliations

  1. Institute of Thermophysics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    O. A. Kabov & E. A. Chinnov

Authors
  1. O. A. Kabov
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  2. E. A. Chinnov
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Kabov, O.A., Chinnov, E.A. Heat Transfer from a Local Heat Source to Subcooled Liquid Film. High Temperature 39, 703–713 (2001). https://doi.org/10.1023/A:1012381010962

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