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Auxiliary Heat System Design and Off-Design Performance Optimization of OTEC Radial Inflow Turbine

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  • Yiming Wang

    (School of Mechanical Engineering, Shandong University, Jinan 250061, China
    Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, Shandong University, Jinan 250061, China
    National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China)

  • Yanjun Liu

    (School of Mechanical Engineering, Shandong University, Jinan 250061, China
    Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, Shandong University, Jinan 250061, China
    National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China)

  • Qiang Zhang

    (School of Mechanical Engineering, Shandong University, Jinan 250061, China
    Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, Shandong University, Jinan 250061, China
    National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China)

Abstract

In this paper, solar energy is used as the auxiliary heat source of the ocean thermal energy radial inflow turbine, and the thermodynamic model of the circulation system is established. In addition, the ejector is introduced into the ocean thermal power generation system, and the process simulation is carried out using Aspen Plus V12. To address performance attenuation of the radial turbine under varying working conditions, shape optimization of a 30 kW OTEC radial turbine was conducted. Finally, the off-design performance variation in the radial inflow turbine is analyzed in the presence of a solar auxiliary heat source. The results show that the use of an auxiliary heat source can effectively improve the cycle efficiency of the system and is also conducive to the stable operation of the radial turbine. Under the condition of auxiliary heat source, the system cycle efficiency is increased by 2.269%.

Suggested Citation

  • Yiming Wang & Yanjun Liu & Qiang Zhang, 2024. "Auxiliary Heat System Design and Off-Design Performance Optimization of OTEC Radial Inflow Turbine," Energies, MDPI, vol. 17(11), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:11:p:2767-:d:1409215
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    References listed on IDEAS

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    1. Sauret, Emilie & Gu, Yuantong, 2014. "Three-dimensional off-design numerical analysis of an organic Rankine cycle radial-inflow turbine," Applied Energy, Elsevier, vol. 135(C), pages 202-211.
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