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RESEARCH PAPERS

Shell-and-Plate-Type Heat Exchangers for OTEC Plants

[+] Author and Article Information
H. Uehara, H. Kusuda, M. Monde, T. Nakaoka

Department of Mechanical Engineering, Saga University, Saga City, Saga, Japan

H. Sumitomo

Hisaka Works, Ltd., Higashi-Osaka City, Osaka, Japan

J. Sol. Energy Eng 106(3), 286-290 (Aug 01, 1984) (5 pages) doi:10.1115/1.3267597 History: Received June 28, 1983; Online November 11, 2009

Abstract

New titanium, shell-and-plate type heat exchangers for ocean-thermal-energy-conversion (OTEC) plants have been developed which include three different plate types (fluted, impinging, and porous-surface) for the evaporator and two kinds of plates (No. 1 and No. 2) for the condenser. Performance tests with fresh water show that the overall heat transfer coefficient U of the evaporator using the porous plate is the highest among the three plates; it can reach 4000–4500 W/m2 K using ammonia as the working fluid and 3500–4000 W/m2 K for a Freon, R-22. The U of the condenser using the No. 2 plate is higher than that using the No. 1 plate; it can reach 3800–4500 W/m2 K for ammonia and 2000–3500 W/m2 K for R-22.

Copyright © 1984 by ASME
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