【摘要】 不可逆过程不仅是自发过程,还包括非自发过程。因此,△S_隔离>0的过程是自发的,而△S_物系+△S_环境>0的过程就不一定了。几个算例说明了这一点。不可逆过程中能量耗散,原本可做有用功的能量没有做功,变成了热交换给环境,以此为原则,可计算△S_总(=△S_物系+△S_环境),它就是I.prigogine的熵产生。列举了几个算例。更多还原

【Abstract】 The riieversible process consists of spontaneous and nonspontanous changes. Several examples prove the fact that ΔSiso>0 is a spontaneous change but ΔSsys+ΔSsurr>0 is not sure for the spontaneous change. In irreversible process the energy dissipation, which might have done useful work, converts into heat exchange and transfers to surroundings. Bused on this principle, the writer calculates ΔSsure (=ΔSsys+ΔSurr whech results in I.Prigogine’s entropy produce, Thkee examples are given to illustrate.更多还原