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经过实物解体观察和数学推导,笔者发现航天工业部第七设计研究院编著的《工业锅炉房设计手册》(第二版)第314页壳管式换热器构造方程中的管间流通面积公式:ｆｗ=π(Ｄｎ2-Ｚｄｗ2)/(4ｎ1)有值得商榷之处。一般壳管式汽水换热器管程是指前后两个水室及其中的隔板分成的若干个回
After the physical disintegration observation and mathematical derivation, the author finds that the formula of inter-pipe circulation area in the formula of shell-and-tube heat exchangers published in the Designing Manual of Industrial Boiler Room (the second edition) compiled by the Seventh Design and Research Institute of the Ministry of Aerospace Industry : fw = π (Dn2-Zdw2) / (4n1) is debatable. The general shell and tube type soda heat exchanger pipe is refers to the front and rear two water chamber and the partition is divided into several back