Research on irreversibility degree in irreversible process of heat engine

By introducing the interior and exterior irreversibility degree factor, this paper deeply discusses the effect of irreversibility degree on heat engine cycle process. Irreversibility degree factor, not necessary for model set up, is a function of the heat engine model set up for clearing confusing methods in irreversibility degree factor. And the way of calculating irreversibility degree factor is put forward. The calculation example shows that the calculate expression could be set up only if the model of heat engine is established suitably. It can be concluded that irreversibility degree factor isnt a simple parameter but a complex function decided by thermal cycle model. And it can be calculated to analyze quantitatively the effect of irreversibility degree on cycle performance and all factors of affecting thermal cycle irreversibility.