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| 高温高热流密度熔盐吸热管传热试验研究 | |
| 引用本文： | 杨敏林,杨晓西,杨小平,丁静,沈向阳.高温高热流密度熔盐吸热管传热试验研究[J].华北电力大学学报,2009,36(1). |
| 作者姓名： | 杨敏林 杨晓西 杨小平 丁静 沈向阳 |
| 作者单位： | 1. 华南理工大学,强化传热与过程节能教育部重点实验室,广东,广州,510640;东莞理工学院,机电工程系,广东,东莞,523808 2. 东莞理工学院,机电工程系,广东,东莞,523808 3. 中山大学,工学院,广东,广州,510006 4. 华南理工大学,强化传热与过程节能教育部重点实验室,广东,广州,510640 |
| 基金项目： | 国家自然科学基金，东莞市科技计划项目 |
| 摘 要： | 以三元熔盐为传热介质,在熔盐吸热传热实验平台上进行高温高热流密度下316L不锈钢熔盐吸热管传热特性试验。吸热管外径为20 mm,实验流体温度控制在250~500℃,热流密度为180~470 kW/m2。实验揭示了不同温度及不同热流密度下熔盐吸热管内对流换热的Nu-Re关系,Nu随Re增加显著增大,实验Nu数普遍高于按Sieder-Tate关联式计算的值。分析了温度及热流密度对熔盐吸热管传热特性的影响,发现熔盐平均温度相同时,低热流密度下的Nu数大于高热流密度下的Nu数,同时实验结果显示高温高热流密度下熔盐吸热管的传热性能主要取决于熔盐流速,且高热流密度对传热过程中的温度影响非常显著。 |
| 关 键 词： | 熔盐吸热管 传热实验 高热流密度 |
Experimental heat transfer research on molten salt receiver tube of high temperature and high flux |
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| YANG Min-lin,YANG Xiao-xi,YANG Xiao-ping,DING Jing,SHEN Xiang-yang.Experimental heat transfer research on molten salt receiver tube of high temperature and high flux[J].Journal of North China Electric Power University,2009,36(1). | |
| Authors: | YANG Min-lin YANG Xiao-xi YANG Xiao-ping DING Jing SHEN Xiang-yang |
| Affiliation: | 1.Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education;South China University of Technology;Guangzhou 510640;China;2.Department of Mechanical Engineering;Dongguan University of Technology;Dongguan 523808;3.School of Engineering;Sun Yat-sen University;Guangzhou 510006;China |
| Abstract: | A series of experiments were done on the heat transfer platform to reveal the heat transferring performance and characteristics of the 316L stainless steel tube with ternary molten salts as transferring fluids under the conditions of high temperature and high heat flux.The outside diameter of the tube is 20 mm and the temperature was controlled between 250～500 ℃ while the heat flux between 180～470 kw/m2.Nu-Re profiles were gained under different temperature and heat flux,Nu increase with the increase of Re,the experimental Nu data is higher than the calculation data according to Sieder-Tate equation.The effects of temperature and heat flux to heat transfer performance were analyzed,at the same mean temperature of molten salt,the Nu of low heat flux is higher than the high heat flux,while the heat transfer performance and characteristics were up to the molten salt velocity and the high flux have the great effects on molten salt temperature. |
| Keywords: | molten salt receiver tube heat transfer experiments high heat flux |
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