绝热功的两点释疑

Two Interpretations for Understanding Adiabatic Work

功是个过程量,2个定态之间所经历的过程不同,则功就不同。但2个定态之间的绝热功却与过程无关,只与始末状态有关。本文解释了绝热功所表现的特殊性,及如何理解绝热功与过程无关,并举例加以说明。

Mechanical work is a process quantity or a path function.It describes quantitatively the transition between two equilibrium states of thermodynamic systems.It depends on how the state is reached,that is,a different process result in a different value of work.However,an adiabatic work depends only on the initial and the end states.This means that the total work done in all adiabatic processes between any two equilibrium states is independent of path.Two interpretations for this specific feature of adiabatic work are presented in this paper.An example that helps to understand the adiabatic work is illustrated.