摘要
塔式太阳能热发电外圆柱式熔盐吸热器的总体尺寸和流量一定时,其性能主要取决于吸热管的结构参数。利用Fluent软件,通过对不同管径、壁厚的熔盐吸热管的传热特性的模拟分析,揭示吸热管结构参数对吸热器性能的影响规律。结果显示,吸热管直径在15 mm至20 mm之间时,吸热器具有较好的综合性能;吸热管外壁面温度随壁厚的增加而急剧增加,导致吸热器的辐射损失和对流损失增加。
When the overall size and the flow rate of the receiver of a solar power tower plant are definite,the diameter and the wall thickness of the receiver tube have great effect on the receiver characteristic.The heat transfer performance for different tube diameter and wall thickness of the molten salt receiver were simulated and analyzed in this paper.The results show that the receiver has a better overall performance when the tube diameter is between 15 mm and 20 mm.The external wall temperature increases greatly with the increase of the wall thickness,which leads to more heat loss due to outer convection and radiation.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第5期849-852,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50776020)
863计划目标导向项目(No.2009AAO5Z218)
关键词
太阳能热发电
熔盐吸热器
性能
吸热管参数
solar thermal power
molten salt receiver
performance
receiver tube parameters
