CARNOT AND PHILIPS HEAT ENGINES IN VIEW OF THE THEORY OF THERMODYNAMIC POTENTIALS

Abstract

A study has been made of the Philips and Carnot cycles based on the modernized physicochemical model of "ideal gas", which utilizes the theory of thermodynamic potentials and assumes the presence of chemical energy. The feasibility study of the Phillips and Carnot heat engines using the thermodynamic potential method is substantiated by plotting the diagrams of the dependence of the internal energy and Helmholtz energy on the absolute temperature and their comparison with the usual pressure-volume diagrams. This method is compared with traditional approach to analysis of cyclic processes. Based on the analysis carried out, the results are similar to those obtained in the study of these processes in the traditional way. On the other hand, the use of new research methods has a significant advantage, since it allows direct use of the activity of the substance (gas) and the entire arsenal of chemical thermodynamics for the analysis of cyclic processes, for example, in the thermal machines of Philips and Carnot.

Keywords

• ideal gas
• isothermal expansion of an ideal gas
• thermodynamic potential
• helmholtz's energy
• cyclic processes
• carnot cycle
• philips cycle
• adiabatic expansion of an ideal gas
• chemical potential