海洋温度差発電の基礎発電特性（熱力学的モデルの構築と熱源流量の影響）

DOI Web Site 被引用文献1件 参考文献10件 オープンアクセス

書誌事項

タイトル別名
  • Fundamental characteristics in power generation by heat engines on ocean thermal energy conversion (Construction of finite-time thermodynamic model and effect of heat source flow rate)

抄録

<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. The authors have proposed a theoretical thermodynamic model using a reversible heat engine to calculate the available thermal energy, exergy, normalized thermal efficiency and exergy efficiency in OTEC based on finite-time thermodynamics. In an OTEC system, the available power will be a balance of the performance of component, such as heat exchangers, turbine/generator, pumps and a working fluid. Thus, the performance of each component has a significant effect on net power production as the efficiency of heat engines driven by low temperature difference is theoretically low. This research develops the conventional OTEC theoretical model, and to calculate the theoretical net power of OTEC considering irreversibility in the heat engine, heat exchange process and fluid flow of heat sources using a coefficient of irreversibility in the heat engine and the effectiveness of heat transfer to apply optimum operation or design optima. The theoretical performance calculated by the model compared with the 30 kW OTEC experimental results in two cases of configurations with different types of plate heat exchangers and units. Consequently, the performance of the thermodynamic model and the experimental results show good agreement using the experimental heat exchanger performance and the irreversibility of heat engine in the thermodynamic model, therefore, the results verified the effectiveness of the novel model.</p>

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (10)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ