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

Yiming Wang, Yanjun Liu and Qiang Zhang ()
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Yiming Wang: School of Mechanical Engineering, Shandong University, Jinan 250061, China
Yanjun Liu: School of Mechanical Engineering, Shandong University, Jinan 250061, China
Qiang Zhang: School of Mechanical Engineering, Shandong University, Jinan 250061, China

Energies, 2024, vol. 17, issue 11, 1-21

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%.

Keywords: ocean thermal energy conversion; radial inflow turbine; multi-energy complementary; off-design performance analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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