充气热管空气预热器的设计分析及应用  

Design Analysis and Application of a Gas-filled Heat-pipe Air Preheater

作　　者：石程名[1] 胡慧莉[1] 李凌波[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044

出　　处：《热能动力工程》2004年第3期306-308,共3页Journal of Engineering for Thermal Energy and Power

摘　　要：对充气热管空气预热器的结构进行分析和应用介绍 ,采用平界面模型 ,确定充气热管冷却段的有效长度。在原始参数相同的条件下 ,对充气和不充气的热管换热器进行试验 ,分析热管最低控制工作温度、排烟温度和换热面积之间的差异。工业试验和实际应用结果表明 :在变工况和高硫煤 (5 % - 7% )的条件下采用充气热管空气预热器具有十分优良的防腐蚀和防积灰的性能。The structure of a gas-filled heat-pipe air preheater is analyzed along with a description of its applications. By using a flat interface model it is possible to determine the effective length of a gas-filled heat pipe cooling section. Under the condition of identical initial parameters the gas-filled heat-pipe heat exchangers and those not being gas-filled are tested and the difference among the heat-pipe minimum operating-control temperature, exhaust gas temperature and heat exchange area is analyzed. The results of industrial tests and practical use indicate that under off-design operating conditions and when firing coal of high sulfur content (5% - 7%) the gas-filled heat-pipe air preheaters excel in corrosion-prevention and ash-fouling resistance performance.

关 键 词：充气热管 空气预热器 防腐蚀 防积灰 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]