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Falling-Film evaporation over horizontal rectangular tubes: Part II—Modeling.

Author(s) : BUSTAMANTE J. G., GARIMELLA S., HUGHES M.

Type of article: IJR article

Summary

A two-part study of on falling-film evaporation on horizontal rectangular tubes, the external geometry of extruded flat, microchannel tubes, was conducted. In the companion paper, Part I, heat transfer experiments on this geometry were reported. In this paper, Part II, three models were developed to predict the flow regime, wetted tube area, and heat transfer coefficients for this configuration. The flow regime model is based on a thermodynamic analysis, while the wetted tube area is found with a hydrodynamic model based on idealized flow assumptions and flow visualization data. The heat transfer model uses the classic Nusselt (1916) film theory as the starting point. These models demonstrated good agreement with the experimental data and trends in the literature.

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Pages: 188-189

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Details

  • Original title: Falling-Film evaporation over horizontal rectangular tubes: Part II—Modeling.
  • Record ID : 30027853
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 120
  • Publication date: 2020/12
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.07.022
  • Document available for consultation in the library of the IIR headquarters only.

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