CPB 314 Lecture 3: CPB 314 (3)
9 Mar 2017
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Document Summary
The number of properties required to fix the state of a system is. The state of a simple compressible system is completely specified by two independent, intensive properties. Simple compressible system: if a system involves no electrical, Magnetic, gravitational, motion, and surface tension effects. Process: any change that a system undergoes from one equilibrium state to another. Path: the series of states through which a system passes during a process. To describe a process completely, one should specify the initial and final states, as well as the path it follows, and the interactions with the surroundings. Quasi-static or quasi-equilibrium process: when a process proceeds in sucha manner that the system remains infinitesimally close to an equilibrium state at all times. Process diagrams plotted by employing thermodynamic properties as coordinates are very useful in visualizing the processes. Some common properties that are used as coordinates are temperature t, pressure p, and volume v (or specific volume v).
