This paper presents an experimental examination of a novel technique to improve the convection heat transfer to a liquid whose boiling point is higher than the temperature of heated surface. A layer of an immiscible, denser, and more volatile “secondary liquid” is placed between the heated surface and the layer of the “primary liquid” which is to be heated. The secondary-liquid boils on the heated surface, and its vapor condenses in the upper primary-liquid layer. The rate of such a heat transfer exceeds by far that of natural convection heat transfer to the single primary-liquid layer with an increase of the surface temperature, and becomes approximately equal to that of boiling heat transfer to the single secondary-liquid layer.
Heat Transfer From a Horizontal Plate Facing Upward to Superposed Liquid-Layers With Change of Phase
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Shimada, Y., Mori, Y. H., and Komotori, K. (November 1, 1977). "Heat Transfer From a Horizontal Plate Facing Upward to Superposed Liquid-Layers With Change of Phase." ASME. J. Heat Transfer. November 1977; 99(4): 568–573. https://doi.org/10.1115/1.3450743
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