Boiling Heat Transfer to Turbulent Liquid Films

Abstract

<p> Benzene and water films were passed over an inclined, hot copper plate. The boiling heat transfer to the turbulent liquid films has been measured with local heat-flux meters. These meters have been adopted from a design suggested by Gardon (G10), and could be used to measure boiling heat fluxes with an accuracy of about -20,000 BTU/hr.sq.ft. The results indicate that the heat transfer to the liquid films compares well with that of forced convection subcooled boiling. </p> <p> During boiling the liquid film is destroyed by the growing vapour bubbles and by the separation of the liquid from the hot plate. The break-up of the liquid films has been investigated with high-speed photography but an analysis of the hydrodynamics of this break-up has not been made. </p>