Аннотация:Scopus SJRDOI: 10.5373/JARDCS/V12I2/S20201415Abstract-The article discusses the method of calculating the dissipative function as a quantitative measure of theirreversibility of processes.The focus is on the formulation of problems and the presentation of methods for solvingthem, based on a theoretical model.A numerical example of the calculation of local and integral dissipation in adiffusion baromembrane process is given.