It proposes an alternative in the management, development and learning of the thermal processes in mechanicalphysics, as they are it the diagrams P-V or Diagrams of Clapeyron, in an ideal system of contained gases in differentrecipients where he thinks about a variation of temperature, pressure and volume. This phenomenology is modeled andit solves by means of the employment of a free platform Gnu/Linux like it is the STEP software package that allows toillustrate and to confront the obtained theoretical solution, through the meters incorporated in this free softwaredeveloped by the groups The KDE Education Project (Kde-Edu) and Fisinfor.