Analysis and Application of Variable Conductance Heat Pipe Air Preheater

查看全文 作　　者：Chengming Shi Yang Wang Quan Liao Ying [1]Yang

机构地区：[1]College of Power Engineering, Chongqing University, Chongqing, 400044, China

出　　处：《Journal of Thermal Science》索引2011年第20卷第3期,共6页

摘　　要：The heat transfer analysis of variable conductance heat pipe air preheater was carried out. The temperature trans-fer matrix was obtained for the air preheater that comprises several discrete heat transfer units with same or different heat transfer surface area in a parallel or counter flow mode. By using the temperature transfer matrix, the outlet fluid temperatures could be easily calculated for a given air preheater and inlet fluid temperatures. The active length of condenser in a variable conductance heat pipe is determined according to the flat interface model. With the same initial conditions, the comparisons between variable conductance heat-pipe air preheater and regular heat pipe air preheater has been analyzed and tested in terms of heat pipe wall temperature, heat transfer surface area and outlet fluid temperatures. Based on the real industrial applications, it has been confirmed that the variable conductance heat pipe air preheater has excellent performance of anti-corrosion and anti-ash-deposition especially at the variable working condition and the sulfur coal (5%-6% mass fraction of sulfur) condition. 关键词：热管空气预热器工业应用电导可变流体温度传热分析转移矩阵接口模型

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Analysis and Application of Variable Conductance Heat Pipe Air Preheater

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