In the first chapters of the book, the conclusions of the equations of transport (continuity, energy, movement) are given; the theory of similarity and the criteria equations based on it are presented. The conclusion of the main equations of the processes of convective heat exchange under laminar and turbulent modes, under conditions of rarefied gas, at high flow rates, at condensation and evaporation of liquid. is given. A summary of the theory of thermal regular mode. The last chapter of the book deals with the processes of heat exchange in the radiation of real surfaces of body systems. The training manual is compiled in accordance with the program of the course "Heat and Mass Exchange" of the state standard of higher and professional education in the direction of training "Technical Physics" and is intended for the preparation of bachelors .