用于太阳热发电的铅-铋合金传热特性分析  

Analysis on Heat Transfer Characteristic of Lead-Bismuth Eutectic Alloy Applied in Solar Thermal Power Generation

作　　者：陈德明[1,2] 舒杰[1] 李戬洪[1] 徐刚[1] 

机构地区：[1]中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,广州510640 [2]中国科学院研究生院,北京100049

出　　处：《动力工程》2008年第5期812-815,共4页Power Engineering

基　　金：国家高技术发展计划资助项目(2007AA05Z431)

摘　　要：介绍了液态铅-铋(LBE)合金的热物理及传热特性,提出了将铅-铋共晶合金用于太阳热发电高温传热工质的构想.并建立了流体传热特性计算模型,对液态铅-铋合金与传统太阳热发电传热工质-熔盐的传热特性进行了对比模拟计算.结果表明:在热力循环中,采用液态LBE合金作为传热工质与熔盐相比,不但具有更高的热效率和热经济性,而且还可大大节省投资成本,因此其作为高温传热工质在太阳能热发电领域具有广阔的应用前景.The thermo-physical and heat transfer properties of liquid lead-bismuth eutectic （LBE） alloy were expounded. An idea of using LBE as high temperature heat transfer medium for solar thermal power generation was proposed. A calculation module for fluid heat transfer properties was established. The heat transfer properties of LBE and molten salt which is the traditional solar heat transfer medium were contrastively calculated. The results indicate that a higher efficiency and better economy were received in heat circulation and the investment costs of solar thermal power generation would be largely saved when using LBE as heat transfer medium than that using molten salt. There is a great prospect to LBE applied in solar thermal power generation as high temperature heat transfer medium.

关 键 词：材料科学 太阳热发电 铅铋合金 传热工质 传热特性 

分 类 号：TK514[动力工程及工程热物理—热能工程]