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1990 Optimization of a Closed-Cycle OTEC System
Optimization of an Ocean Thermal Energy Conversion (OTEC) system is carried out by the Powell Method (the method of steepest decent). The parameters in the objective function consist of the velocities of cold sea water and warm sea water passing through the heat exchangers, the phase change temperature, and turbine configuration (specific speed, specific diameter, ratio of blade to diameter). Numerical results are shown for a 100MW OTEC plant with plate type heat exchangers using ammonia as working fluid, and are compared with calculation results for the case when the turbine is fixed.
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