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ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

HEAT TRANSFER ANALYSIS OF AIR BUBBLER SYSTEM

Get access (open in a dialog) DOI: 10.1615/IHTC5.50
pages 139-143

摘要

An analytical and experimental study was conducted on the heat transfer characteristics of air bubblers. Two models describing bubble induced water motion were proposed. Model I assumes that the liquid motion is one-dimensional, upward in the center and downward along the column wall. Model II assumes that the induced jet is axisymmetric and after impinging on an ice surface becomes a surface jet. The experimental study determines ice melting rate as a function of air bubbling rate and column dimensions. The results are expressed in terms of thermal diffusivity and Nusselt number as a function of Reynolds number. The experimental results agree reasonably well with the predictions from Model II, thus lending validity to this model.