Design and Evaluation of Evaporating Lens Direct Contact Heat Exchangers

[+] Author and Article Information
C. A. Kodres, H. R. Jacobs, R. F. Boehm

Department of Mechanical and Industrial Engineering, University of Utah, Salt Lake City, Utah 84112

J. Energy Resour. Technol 103(2), 128-132 (Jun 01, 1981) (5 pages) doi:10.1115/1.3230824 History: Received February 24, 1981; Online October 22, 2009


An explicit procedure for analyzing a superheated, evaporating lens direct contact heat exchanger has been developed. This method is based upon the application of a dimensional analysis derivation of a relationship for the heat flux from a single evaporating lens. Several suggestions are offered for use in the design of these devices. To estimate the error introduced by extrapolating a single lens model to represent a system of lenses, the method is used to “design” two operating geothermal heat exchangers. A difference of about 16 percent is observed between the calculated and measured overall heat flux.

Copyright © 1981 by ASME
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