Performance Evaluations of LiCl and LiBr for Absorber Design Applications in the Open-Cycle Absorption Refrigeration System

[+] Author and Article Information
K. J. Kim

Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131

T. A. Ameel

Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112

B. D. Wood

Mechanical Engineering Department, University of Nevada, Reno, NV 8955

J. Sol. Energy Eng 119(2), 165-173 (May 01, 1997) (9 pages) doi:10.1115/1.2887898 History: Received April 01, 1996; Revised October 01, 1996; Online February 14, 2008


Both LiCl and LiBr solutions were considered for potential use in a solar-driven Open-Cycle Absorption Refrigeration (OCAR) system. A vertical falling film absorber was proposed and built to evaluate the performance of LiCl and LiBr as an absorbent. Absorption experiments were performed and the results are reported for typical operating conditions of nonabsorbable concentrations, solution concentration, solution temperature, cooling water temperature, absorber pressure, and solution flow rate, in terms of mass transfer rate. In general, LiBr outperformed LiCl in terms of effective absorption rate. Based upon experimental results, the required absorber area was estimated for both LiCl and LiBr. The small chemical potential of LiCl relative to LiBr leads to a larger absorber area. The cost for the required solution storage for three-ton cooling capacity of the present OCAR system was found to be high for both LiCl and LiBr. The pumping cost was estimated to be less than 0.1 kW for both.

Copyright © 1997 by The American Society of Mechanical Engineers
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