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International Heat Transfer Conference 8

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

ANALYSIS OF DIFFUSION THERMO-EFFECTS IN FILM ABSORPTION

Gershon Grossman
Faculty of Mechanical Engineering, Technion-Israel Institute of Technology Haifa, Israel

Abstract

The mass transfer process taking place in absorption of gases and vapors in liquids is often accompanied by a significant heat effect. When large temperature and concentration gradients are present, particularly in short, developing boundary layers, the diffusion thermo-effects may become significant. This paper considers a falling film model where the energy and diffusion equations are solved simultaneously to evaluate the contribution of diffusion thermo-effects in the combined heat and mass transfer process. A short-exposure time solution is obtained and the scaling parameters are developed.

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