Heat Transfer and Flow Resistance of a Shell and Plate-Type Evaporator

[+] Author and Article Information
H. Uehara, E. Stuhlträger, A. Miyara, H. Murakami, K. Miyazaki

OTEC Laboratory, Saga University, 1 Honjo-machi, Saga City, Saga 840, Japan

J. Sol. Energy Eng 119(2), 160-164 (May 01, 1997) (5 pages) doi:10.1115/1.2887897 History: Received January 01, 1990; Revised August 01, 1996; Online February 14, 2008


The performance test of a shell-and-plate-type evaporator designed for OTEC plants, geothermal power plants, and heat pump systems is reported. This evaporator contains 30 plates with a unit area of 0.813 m2 , coated with aluminum powder on the working fluid side. Freon 22 is used as working fluid. Results show an overall heat transfer coefficient of about 5000 W/(m2 K) when the heating water velocity is 1 m/s. The mean boiling heat transfer coefficient is compared with a previous correlation proposed by Nakaoka and Uehara (1988). The water-side pressure loss is also reported.

Copyright © 1997 by The American Society of Mechanical Engineers
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