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Dual-use open cycle ocean thermal energy conversion (OC-OTEC) using multiple condensers for adjustable power generation and seawater desalination

Authors
Kim, Albert S.Kim, Hyeon-JuLee, Ho-SaengCha, Sangwon
Issue Date
1월-2016
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Open cycle ocean thermal energy conversion (OTEC); Multiple condensers; Steam flow fraction; Flash evaporator; Turbine; Dual-use OTEC
Citation
RENEWABLE ENERGY, v.85, pp 344 - 358
Pages
15
Journal Title
RENEWABLE ENERGY
Volume
85
Start Page
344
End Page
358
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/680
DOI
10.1016/j.renene.2015.06.014
ISSN
0960-1481
Abstract
Multiple condensers are used for dual-use open cycle ocean thermal energy conversion to generate both electric power and desalinated water with preset ratios. Fundamentals of heat and mass transfer phenomena are scrutinized to identify optimal operational conditions of various OC-OTEC plant scales. Important control parameters include warm water temperature and its intake rate, vacuum pressure in the evaporator, and cold water temperature. Intake rate of the cold deep seawater is estimated based on the operational mode and conditions. Performances of the multiple condenser OC-OTEC system, power generation and seawater desalination capacities are analytically evaluated in terms of steam flow fractions, temperature of intake seawater, and vacuum pressure. This research provides unprecedented levels of theoretical depth, mathematical details, and design criteria for highly optimized dual-use OC-OTEC operations. Future research directions for OC-OTEC technologies are also discussed in detail. (C) 2015 Elsevier Ltd. All rights reserved.
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친환경해양개발연구본부 (해수에너지연구센터)
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