The process converting work to heat is analysed introducing a model. The entropy change in the process is calculated by classical Boltzmann distribution.

• 本文在分析功变热过程的基础上 ；引入了功变热过程的简化模型 ；利用经典玻尔兹曼分布计算了一定量气体[1] 从有序运动向无序运动转化中的熵变 .