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RESEARCH PAPERS

An OTEC Pilot Plant Heat Engine

[+] Author and Article Information
D. Richards

Technical Coordination, Ocean Energy Programs, The Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20810

L. L. Perini

The Johns Hopkins University, Applied Physics Laboratory, Laurel, Md. 20810

J. Energy Resour. Technol 103(2), 172-179 (Jun 01, 1981) (8 pages) doi:10.1115/1.3230831 History: Received February 24, 1981; Online October 22, 2009

Abstract

This paper summarizes the heat-engine system design for an ocean thermal energy conversion (OTEC) plant and its integration in the platform, and describes system components and their performance and construction requirements together with the computed overall cycle performance and operation. Ancillary equipment and platform arrangement and support requirements are discussed as to their effect on the platform design. The heat engine and platform design is based upon the JHU/Applied Physics Laboratory (APL) folded-tube, shell-less heat exchanger module concept as developed from analytical and experimental work previously reported. The heat engine design discussed is among the candidates for the construction of large commercial OTEC plantships. In the APL concept, the plantship will cruise (graze) the tropical oceans to utilize the maximum available ocean temperature difference. They will produce energy-intensive products such as ammonia, which can be synthesized from sea water and air and shipped to U.S. or foreign ports for use as fertilizer or as a hydrogen fuel carrier. The pilot plant design presented is for a 10–20-MW net output plant made up of 2.5-MWe net heat exchanger modules manifolded to 5 MWe net turbine-generator sets. In this approach, it is anticipated that all construction requirements, manifolding, cycle control, and installation and operational requirements can be determined and evaluated for the detailed design of large commercial vessels.

Copyright © 1981 by ASME
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