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Preliminary design and performance analysis of a radial inflow turbine for ocean thermal energy conversion

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  • Kim, Do-Yeop
  • Kim, You-Taek

Abstract

Ocean thermal energy conversion is an organic Rankine cycle for generating power using the temperature difference between surface seawater and deep seawater. The potential of ocean thermal energy is significant, and it is an environmentally friendly power system. However, its thermal efficiency is very low due to the low temperature difference between surface seawater and deep seawater. Hence, it is essential to develop a high efficiency turbine in order to improve the thermal efficiency of ocean thermal energy conversion. The precise preliminary design for the high efficiency radial inflow turbine requires selection of the appropriate flow and loading coefficients for the target efficiency. A new approach for the appropriate choice of flow and loading coefficients is proposed in this study. The meanline analysis and three-dimensional viscous simulations for the designed turbine are conducted in order to verify the proposed approach in design and off-design conditions. The results demonstrate that the optimum radial inflow turbine for the design conditions can be designed through applying the proposed model.

Suggested Citation

  • Kim, Do-Yeop & Kim, You-Taek, 2017. "Preliminary design and performance analysis of a radial inflow turbine for ocean thermal energy conversion," Renewable Energy, Elsevier, vol. 106(C), pages 255-263.
    • Handle: RePEc:eee:renene:v:106:y:2017:i:c:p:255-263
    DOI: 10.1016/j.renene.2017.01.038
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    References listed on IDEAS

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    Cited by:

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    12. Deligant, Michael & Sauret, Emilie & Danel, Quentin & Bakir, Farid, 2020. "Performance assessment of a standard radial turbine as turbo expander for an adapted solar concentration ORC," Renewable Energy, Elsevier, vol. 147(P3), pages 2833-2841.
    13. Wang, Zhiqi & Xie, Baoqi & Xia, Xiaoxia & Luo, Lan & Yang, Huya & Li, Xin, 2023. "Entropy production analysis of a radial inflow turbine with variable inlet guide vane for ORC application," Energy, Elsevier, vol. 265(C).
    14. Zhang, Chengbin & Wu, Zhe & Wang, Jiadian & Ding, Ce & Gao, Tieyu & Chen, Yongping, 2023. "Thermodynamic performance of a radial-inflow turbine for ocean thermal energy conversion using ammonia," Renewable Energy, Elsevier, vol. 202(C), pages 907-920.
    15. Chen, Yun & Liu, Yanjun & Liu, Weimin & Ge, Yunzheng & Xue, Yifan & Zhang, Li, 2022. "Optimal design of radial inflow turbine for ocean thermal energy conversion based on the installation angle of nozzle blade," Renewable Energy, Elsevier, vol. 184(C), pages 857-870.
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    17. Wang, Xing & Zhang, Xuehui & Zhu, Yangli & Zhang, Xinjing & Li, Wen & Chen, Haisheng, 2019. "Effect of blade tip leakage flow on erosion of a radial inflow turbine for compressed air energy storage system," Energy, Elsevier, vol. 178(C), pages 195-206.

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