管式空气预热器的管壁温度变工况分析

The Wall Temperature Analysis of Pipe_type Air Preheater in Transient Conditions

管式空气预热器的堵灰和腐蚀与管子壁温有很大关系，本文运用变量全微分的方法推出了烟气温度、空气温度、烟气流速、空气流速和管子直径变化时对管壁温度影响的计算模型，给运行和设计过程中控制管壁温度提供了一种简明完善的方法。

The ash fouling and corrosion of boiler's pipe_type air preheater depend largely on the pipe wall temperature.The calculating model of wall temperature has been deducted by using total differential method,which will be a simple and accurate method to control wall temperature in the process of operation and design in this paper.The gas temperature,air temperature,gas flow rate and air flow rate have been considered in the model.