BENEFIT ANALYSIS OF DEEP-SEA TEMPERATURE DIFFERENCE ENERGY UTILIZATION BASED ON SOUTH CHINA SEA

Wu Honghua; Yang Xin; Li Zhengnong; Kuang Rao

doi:10.19912/j.0254-0096.tynxb.2023-1034

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 536-544. DOI: 10.19912/j.0254-0096.tynxb.2023-1034

BENEFIT ANALYSIS OF DEEP-SEA TEMPERATURE DIFFERENCE ENERGY UTILIZATION BASED ON SOUTH CHINA SEA

Wu Honghua¹, Yang Xin¹, Li Zhengnong¹, Kuang Rao²

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Abstract

The heat transfer process of cold seawater pumping in the flexible riser was simulated by using Fluent software to determine the influence of different materials on the outlet temperature of cold seawater, and the cold seawater temperature of FRP pipe was nearly 3K lower than that of steel pipe under the same conditions, and the economic benefits of ocean temperature difference energy power generation system were analyzed. With FRP pipe and steel pipe as seawater riser, the levelized LCOE of the corresponding system of FRP pipe is 23.78% lower than that of steel pipe. The PVT system was used to increase the temperature of warm seawater by 5-20 K, and the results showed that the higher the temperature, the lower the levelized LCOE, the corresponding cost of FRP pipe decreased by 25.44%, and the corresponding cost of steel pipe decreased by 29.48%, and the optimization effect of steel pipe system was more obvious. The effect of expanding the installed power on the cost optimization of the system was analyzed, and the two optimization methods of increasing the heat source temperature and expanding the installed power were combined to determine that the levelized LCOE of the optimal combined system was reduced by nearly 50% compared with the original configuration.

Key words

ocean thermal energy conversion / insulation / economic analysis / levelized cost of energy / cost optimization

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Wu Honghua, Yang Xin, Li Zhengnong, Kuang Rao. BENEFIT ANALYSIS OF DEEP-SEA TEMPERATURE DIFFERENCE ENERGY UTILIZATION BASED ON SOUTH CHINA SEA[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 536-544 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1034

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