对一个热力学不可逆过程熵变计算问题的浅析

Analysis of Entropy Change during Thermodynamics Irreversible Process

在物理化学课程中,计算相关熵变函数时,对不可逆过程往往要设计成一个可逆过程来计算,需把握减少中间变量,充分利用已知数据的原则。可逆过程的设计问题较复杂,内容多,教与学的难度都很大,因而为提高教学和学习的效果,教学过程中应该注意可逆过程概念的理解,掌握可逆过程的实质问题。

The entropy change of the irreversible process is calculated on the basis of the reversible heat, and few variation functions are introduced into the reversible process by the use of the known data. The design methods of reversible process are complex and difficult. To improve teaching effect and quality, some teaching methods are emphasized in teaching process, such as, the better understanding of concep- tion, the timely summarizing of theory, the macroscopically grasping of nature of the reversible process.