熵概念与Clausius不等式推导方式的教学探讨

本文介绍了一种在教学上利用热力学第二定律及理想气体的状态方程直接导出熵的简单方法,利用系统过程中环境压强与系统体积变化的乘积小于等于系统压强与系统体积变化的乘积的关系,直接导出Clausius不等式。该教学方法还可引导学生找出另外一个新的热力学状态函数。

Study and Discussion on Teaching Method of Depriving Concept of Entropy and Clausius Inequality

A simple teaching approach is introduced on how the thermodynamic property of entropy is de- prived, based on the second law of thermodynamics and the state equation of the ideal gas. The Clausius inequality is also deduced easily by the fact that PedV 〈=PdV （Pc and P are pressures of environment and system respectively, the W is the volume of system）. A new thermodynamic property can be found with the teaching approach.