Adiabatic Compression of Water in Vapor-Liquid Equilibrium (VLE)
A piston compresses a vapor-liquid equilibrium mixture of water adiabatically and reversibly. The initial temperature is 425 K, and the initial pressure is 0.5 MPa. Use the sliders to set the "initial vapor quality" (fraction of water that is vapor) and the final pressure. The initial state (green dot) and the final state (blue dot) are shown on log pressure versus log volume (P-V), log pressure versus temperature (P-T), and temperature versus entropy (T-S) plots. Select two plots to display from the drop-down menus. The initial vapor quality determines whether the quality increases or decreases as the mixture is compressed.

Download the CDF file to view the simulation using the free Wolfram CDF player.