化工原理教学中传质对传热教学的启发及运用

Enlightenment of Mass Transfer on Heat Transfer Teaching in Teaching of Principles of Chemical Engineering and Its Application

通过对比吸收与传热的假设和模型,寻找出它们的共同点,进而借鉴吸收的处理方法,推导出逆流传热中传热单元数和传热单元长度的计算公式,绘制了传热单元数的图形,并提出了定性分析传热操作型问题的基本思路。通过对比建立了传质和传热之间的联系,使它们不再是分散的知识点,这有利于学生对化工原理知识的理解和掌握。

The common points of absorption and heat transfer were found by comparison of the assumptions and transfer model.Furthermore,the computational formula and graphs of the number and the length of a transfer unit were deduced in the countercurrent heat transfer through learning from the treatment method of absorption.Based on the study,the basic analysis methodology for qualitative analysis of operational heat transfer problems was proposed.The connection between mass transfer and heat transfer was established through the comparison,so that they were no longer random knowledge points,which was beneficial for students to understand and master principles of chemical engineering.