Development of a flow boiling map for subcooled and saturated flow boiling of different fluids inside circular tubes

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Title: Development of a flow boiling map for subcooled and saturated flow boiling of different fluids inside circular tubes
Author: Kandlikar, Satish
Abstract: The thermal behavior of a flow boiling system is represented by a flow boiling map to illustrate visually the relationships among various system parameters. An earlier flow boiling map Collier (1981) does not include the effect of mass flux and is specific to water at low pressures. For other fluids, significant departures from the parametric trends displayed in Collier's map have been reported in the literature (e.g., Kandlikar, 1988b). In the present paper, a new flow boiling map is developed to depict the relationships among the heat transfer coefficient, quality, heat flux, and mass flux for different fluids in the subcooled and the saturated flow boiling regions. the trends observed in the experimental data and correlations for water and refrigerants are used i9n deriving the present map. The particular areas where further investigation is needed to validate the trends are also indicated. In the subcooled boiling regions, h_tp/h_lo is plotted against x with p_1/p_g and a modified boiling number Bo* as parameters. It is hoped that the map would prove to be helpful in explaining the role of different heat transfer mechanisms in flow boiling of different fluids.
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/5523
Publishers URL: http://dx.doi.org/10.1115/1.2910524
Date: 1991-02

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