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RESEARCH PAPERS

Analysis of a New Thermodynamic Cycle for Combined Power and Cooling Using Low and Mid Temperature Solar Collectors

[+] Author and Article Information
D. Yogi Goswami, Feng Xu

Solar Energy and Energy Conversion Laboratory, Department of Mechanical Engineering, University of Florida, Gainesville, FL 32611-6300

J. Sol. Energy Eng 121(2), 91-97 (May 01, 1999) (7 pages) doi:10.1115/1.2888152 History: Received March 01, 1998; Revised March 01, 1999; Online February 14, 2008

Abstract

A combined thermal power and cooling cycle is proposed which combines the Rankine and absorption refrigeration cycles. It can provide power output as well as refrigeration with power generation as a primary goal. Ammonia-water mixture is used as a working fluid. The boiling temperature of the ammonia-water mixture increases as the boiling process proceeds until all liquid is vaporized, so that a better thermal match is obtained in the boiler. The proposed cycle takes advantage of the low boiling temperature of ammonia vapor so that it can be expanded to a low temperature while it is still in a vapor state or a high quality two phase state. This cycle is ideally suited for solar thermal power using low cost concentrating collectors, with the potential to reduce the capital cost of a solar thermal power plant. The cycle can also be used as a bottoming cycle for any thermal power plant. This paper presents a parametric analysis of the proposed cycle.

Copyright © 1999 by The American Society of Mechanical Engineers
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