A thermodynamic analysis has been performed for the operation of piston machines using ideal and real gases as a working body in direct and inverse Carnot cycles. An interrelationship has been established between the fugacity coefficient of the working body (real gas) and the efficiency of a piston thermal machine. Calculating formulas have been obtained for identifying the dependence of the efficiency of such machines on the characteristics of their working body. Verification has been conducted for the proposed method of thermodynamic potentials and the relations obtained on its basis connecting the actual efficiency of a thermal machine with the fugacity coefficient of its working body.
NSTL
Springer Nature
