DocumentCode
2825802
Title
Evaluation of Sliding Pressure Operation For OTEC Plant
Author
Nakamoto, Yasunobu ; Terayama, Toshiro ; Takayanagi, Mikio
Author_Institution
Toshiba Corporation, Tokyo, Japan
fYear
1983
fDate
Aug. 29 1983-Sept. 1 1983
Firstpage
711
Lastpage
715
Abstract
The Ocean Thermal Energy Conversion (OTEC) system is extremely sensitive to a difference in temperature between surface seawater and deep seawater. When the surface seawater temperature drops only 
C, the generator terminal output is reduced by 50%. To minimize this reduced output, sliding pressure operation is effective. Setting the optimum evaporating pressure according to the surface seawater operating temperature allows the annual power output to be several times greater than constant pressure operation. Theoretical analysis of the optimum evaporating pressure for a given change in surface seawater temperature has been conducted. The results of this theoretical analysis agreed with the experiment using the 100kW OTEC pilot plant in Nauru.
C, the generator terminal output is reduced by 50%. To minimize this reduced output, sliding pressure operation is effective. Setting the optimum evaporating pressure according to the surface seawater operating temperature allows the annual power output to be several times greater than constant pressure operation. Theoretical analysis of the optimum evaporating pressure for a given change in surface seawater temperature has been conducted. The results of this theoretical analysis agreed with the experiment using the 100kW OTEC pilot plant in Nauru.Keywords
Control systems; Equations; Pattern analysis; Performance analysis; Power generation; Pressure control; Sliding mode control; Temperature control; Turbines; Valves;
fLanguage
English
Publisher
ieee
Conference_Titel
OCEANS '83, Proceedings
Conference_Location
San Francisco, CA, USA
Type
conf
DOI
10.1109/OCEANS.1983.1151975
Filename
1151975
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