This simulation shows a temperature-entropy \((\textit{T-S})\) diagram for water. Use the checkboxes to add or remove a property from the diagram. You can show lines of constant enthalpy (green), pressure (blue), and and quality (mass% vapor, purple). Check "phase envelope" to view the saturated liquid (magenta) and saturated vapor (orange) curves and the location of the critical point. Check "grid lines" to display grid lines.

1. "Thermophysical Properties of Fluid Systems." (Aug 11, 2016) webbook.nist.gov/chemistry/fluid/
2. T-S and P-H Diagrams [Video]. (Aug 11, 2016). www.youtube.com/watch?v=10q0akdZ7QQ

This simulation was created in the Department of Chemical and Biological Engineering, at University of Colorado Boulder for LearnChemE.com by Adam J. Johnston under the direction of Professor John L. Falconer and was converted to HTML5 by Patrick Doyle, with additional contributions by Neil Hendren. Address any questions or comments to learncheme@gmail.com. All of our simulations are open source, and are available on our LearnChemE Github repository.

If this simulation is too big for your screen, zoom out using  +  on Mac or  +  on Windows. To zoom in, use  +  on Mac or  +  on Windows.