在考虑管壁壁厚热阻和管壁污垢影响的情况下,导出了逆流换热器高低温流体的温度分布和管壁温度分布计算式。在考虑传热过程有压降的情况下,导出了逆流换热器的高低温流体的局部传递系数。计算式中体现出了两者内在的耦合关系,通过分析传递系数得出换热器的损分布,为确定合理的运行参数以及优化结构参数提供参考。 Considering the thermal resistance of the wall and the fouling of the wall, the temperature distribution and the wall temperature distribution of the high and low temperature fluid in the countercurrent heat exchanger are deduced. Considering the pressure drop in the heat transfer process, the local transfer coefficient of the high and low temperature fluid in the countercurrent heat exchanger is derived. The formula shows the inherent coupling relationship between the two. By analyzing the transfer coefficient, the distribution of the heat exchanger is obtained, which provides a reference for determining the reasonable operating parameters and optimizing the structural parameters.