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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

THE CONDENSATION OF VAPOUR BUBBLE IN AN IMMISCIBLE LIQUID

Get access (open in a dialog) DOI: 10.1615/IHTC7.310
pages 15-20

Abstract

This work is an experimental and theoretical study of the condensation and collapse of single bubbles of either iso-pentane or n-pentane in an immiscible liquid medium consisting of either distilled water or an aqueous glycerol solution. In the experiments single bubbles were injected into the bottom of the immiscible liquid column and were photographed using a Bolex cine-camera as they rose through the column. The photographs were analysed to give values of equivalent bubble radius and distance of bubble travel. These were then related to the time from bubble departure to give bubble size and mean bubble velocity. The theoretical model assumed a liquid condensate film, of uniform thickness forming and draining into a pool at the bottom of the bubble. Allowance was made for the presence of non-condensible gas and for increase of concentration and gas diffusion towards the interface as condensation continued. Because the liquid pool volume was small in all tests the collapse equations obtained were simplified and the experimental results compared with these simplified equations.