When a gas expands through an adiabatic throttle (often a porous plug), the temperature can change as a result of the Joule–Thomson effect. You can select one of four gases, and use sliders to adjust the inlet temperature, inlet pressure and outlet pressure. The intensity of the green color is proportional to the gas density, and the throttle is thicker for a larger pressure drop. Select “J-T coeff. vs. temperature” to see the Joule–Thomson coefficient plotted as a function of temperature.

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About:

This simulation was made at the University of Colorado Boulder, Department of Chemical and Biological Engineering.  Author(s): Adam J. Johnston

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