台车式热处理炉辐射换热器计算方法及传热特性分析.PDF

~ ~ 台车式热处理炉辐射换热器 计算方法及传热特性分析 韩小良 ( 中国冶金设备总公司 北京100711) : 建立了筒状辐射换热器传热计算模型, 分析了 车式热处理炉上使用燃气辐射换热器 的传热特性( 空气预热温度壁温和传热系数) 结果表明, 燃气辐射换热器的传热特性在整 个 热处理过程中是不断变化的, 空气平均预热温度并不能达到换热器的额定设计值, 故在周期式 热处理炉上使用辐射换热器并不完全合适本文的方法既可用于换热器的设计, 又可用于换 热器的核算 : 热处理炉; 换热器; 温度; 预热 :TM924. 02 : A : 1008- 1690( 200 1) 01- 0029- 04 Analysis on Calculation Method and Thermal Transmission Characteristic o Radiation Recuperator or Car- type Heat Treatment Furnace HAN Xiao- liang ( China Metallurgical Device Corporation) Abstract: he calculation model for tubular radiation recuperator has been established and the ther- mal transmission characteristics ( preheating temperature of air, temperature of furnace wall and thermal transmission coefficient) of the radiation recuperator for car- type heat treating furnace has been therefore analyzed. Study results show that the thermal transmission characteristic of the radiation recuperator is variable during the heat treating process, and the average preheating tem- perature of air is not capable of achieving the rated design value of the recuperator. Key words: heat treating furnace; recuperator; temperature; preheating [ 1] 1 , , ( , ) , ( 100~ 200e ) , , , , , , , , , , 2 , 1 34 2001. No. 1 ) 29 ) d ( m) ,A : 1