Finite-time Thermodynamicsに基づく海洋温度差発電用熱交換器の性能評価指標の提案

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  • Proposal of Performance Evaluation Index of Heat Exchanger for Ocean Thermal Energy Conversion based on Finite-time Thermodynamics

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<p>Ocean thermal energy conversion (OTEC) is a system to convert the thermal energy stored as the vertical temperature gradient in the ocean into the electricity. On account of the low available temperature difference for heat engines, the heat exchangers are the key component in terms of the efficient energy conversion. However, the performance of heat exchanger is, in general, evaluated as the heat transfer performance and the pressure drop, and the relation of the performance and the effectiveness for achieving the net power has not been clarified yet. This research proposes the comprehensive heat exchanger performance index based on finite-time thermodynamics for designs and developments in plate heat exchangers. The proposed performance evaluation index is applied to existing plate heat exchangers, and the sensitivities of the index to the heat source temperature is confirmed.</p>

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