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RESEARCH PAPERS

Comparison of Mass and Heat Transfer Coefficients of Liquid-Desiccant Mixtures in a Packed Column

[+] Author and Article Information
A. Ertas, E. E. Anderson, S. Kavasogullari

Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409

J. Energy Resour. Technol 113(1), 1-6 (Mar 01, 1991) (6 pages) doi:10.1115/1.2905774 History: Received August 03, 1990; Revised February 07, 1991; Online April 16, 2008

Abstract

In order to analyze the performance of packed columns for dehumidification processes, calculation of the mass and heat transfer coefficients of the packing material used in the column is necessary. This paper is concerned with the interface transfer of heat and mass when air is brought into contact with the liquid desiccant mixtures. A theoretical study of heat and mass transfer analysis in an air-desiccant dehumidification contact system (packed column) employing liquid-desiccants, namely calcium chloride (CaCl2 ), lithium chloride (LiCl), and a new liquid-desiccant mixture (Cost-Effective Liquid Desiccant, CELD) consisting of 50 percent lithium chloride and 50 percent calcium chloride is studied. Mass and heat transfer coefficients for the gas and liquid phase, by use of 0.5-in., 1-in., 1.5-in., and 2-in. ceramic Rasching rings, are calculated. The findings for the three liquid desiccants are compared and discussed.

Copyright © 1991 by The American Society of Mechanical Engineers
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