南海海域温差能资源分布特性及站点选址研究  

Research on the Distribution Characteristics of Temperature Difference Energy and Site Selection in the South China Sea

作　　者：高越 于青双 刘广波 Gao Yue;Yu Qingshuang;Liu Guangbo(Shandong Harbour Engineering Co.,Ltd.,Qingdao Shandong 266427,China)

机构地区：[1]山东港湾建设集团有限公司,山东青岛266427

出　　处：《港口航道与近海工程》2024年第4期145-150,共6页Port,Waterway and Offshore Engineering

摘　　要：为实现岛基温差能发电平台在南海区域发电能力的定量评估,从而为温差能站点选址优化提供可靠的理论依据,本文基于全球水温分布数据集,采用数据再分析方法,针对中国南海的温差能分布建立了三维数学模型,开展南海温差能时空分布特征定量评估,探讨了不同选址位置对温差能利用效率的影响。研究结果表明:南海海域800m水深处与表层水温的多年平均温差在23℃左右,年内温差变化幅度在3℃以内。其中夏季南海的温差能资源达到年内峰值,三沙海域温差能净功率都在19MW以上;冬季是南海温差能资源最低的时期,西沙群岛温差能仅为12MW左右,中沙群岛温差能为15MW左右。温差能随着水深的增大而明显增加,在同一水深条件下的温差能净功率差别很小,但是不同选址方案对应的离岸距离差异较为显著。In order to quantitatively evaluate the power generation capacity of island based temperature difference generation platforms in the South China Sea region,and provide reliable theoretical basis for optimizing the site selection of temperature difference energy generation platform,this paper is based on a global water temperature distribution dataset and uses data reanalysis methods to establish a three-dimensional mathematical model for the distribution of thermoelectric energy in the South China Sea.A quantitative evaluation of the spatiotemporal distribution characteristics of thermoelectric energy in the South China Sea is carried out,and explored the impact of different site locations on the efficiency of temperature difference energy utilization.The research results indicate that the annual average temperature difference between the 800 m depth and surface water temperature in the South China Sea is around 23°C,and the annual temperature difference variation amplitude is within 3°C.The temperature difference energy resources in the South China Sea reached their peak within the year in summer,and the net power of temperature difference energy in the Sansha Sea area was above 19 MW;Winter is the lowest period of thermal energy level in the South China Sea.The thermal energy of the Xisha Islands is only about 12 MW,and that of the Zhongsha Islands is about 15 MW.The temperature difference energy increases significantly with the increase of water depth.The net power difference of temperature difference energy under the same water depth condition is very small,but the offshore distance difference corresponding to different site selection schemes is more significant.

关 键 词：南海 温差能 数据再分析 数值模拟 微观选址 

分 类 号：P743.4[天文地球—海洋科学]