CORA DATA-BASED STUDY ON SPACE-TIME CHARACTERISTICS OF THERMAL ENERGY IN SOUTH CHINA SEA

Ding Jie; Wu Guowei; Jiang Bo; Hou Erhu; Bai Yang; Wang Xiaoyong

doi:10.19912/j.0254-0096.tynxb.2021-1507

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (1) : 402-409. DOI: 10.19912/j.0254-0096.tynxb.2021-1507

CORA DATA-BASED STUDY ON SPACE-TIME CHARACTERISTICS OF THERMAL ENERGY IN SOUTH CHINA SEA

Ding Jie, Wu Guowei, Jiang Bo, Hou Erhu, Bai Yang, Wang Xiaoyong

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Abstract

According to the China Ocean Reanalysis （CORA） of daily average temperature in the South China Sea （SCS） from 2000 to 2013, this paper analyzes the geographical distribution of thermal energy in the SCS different seasons and years and its change by calculating temperature difference between the sea surface （5 m） and deep sea （1000 m）, Carnot efficiency, effective head, volume of warm water and available exploitation amount of thermal energy. The results show that： 1） The temperature difference in the deep sea of more than 1000 m is adequate to generate efficient net power, which is available through out the year. Its distribution varies from season to season, it is highest in summer, followed by autumn and spring and winter. From the Spratly Islands to the western part of Luzon Island, it is usually hot all year round. 2） South of the Zhongsha Islands has the highest Carnot with the lowest fluctuation. The highest efficient month is from May to August. 3） The annual average effective head is 774 m-945 m in the SCS. It is highest in the Middle East and south of the SCS, and it is more than 850 m from the southwest to the northeast. It increases by 2.0 m-3.0 m year on year in the central and southern SCS and the Western Luzon Island. 4） The monthly change of warm water volume in the SCS is in a "V-shaped" distribution. The warm water volume in winter is high, above 8.50×10¹³ m³. The average volume is 7.31×10¹³ m³ per year, with an increase of 0.165×10¹³ m³/a. 5） In 14 years. The average amount of thermal energy that can be exploited in the SCS is 238.86 GW, with an increase of 5.61 GW/a. Therefore, there is great prospect in exploiting the thermal energy in the SCS.

Key words

thermal energy / ocean thermal energy conversion / renewable energy resources / Carnot efficiency / effective head / warm water volume / available exploitation amount

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Ding Jie, Wu Guowei, Jiang Bo, Hou Erhu, Bai Yang, Wang Xiaoyong. CORA DATA-BASED STUDY ON SPACE-TIME CHARACTERISTICS OF THERMAL ENERGY IN SOUTH CHINA SEA[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 402-409 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1507

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