Joule-Thomson effect

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The Joule-Thomson effect is also known as the Joule-Kelvin effect.

Joule-Thomson coefficient

The Joule-Thomson coefficient is given by

where T is the temperature, p is the pressure and H is the enthalpy.

In terms of heat capacities one has

and


In terms of the second virial coefficient at zero pressure one has

References

  1. Thomas R. Rybolt "A virial treatment of the Joule and Joule-Thomson coefficients", Journal of Chemical Education 58 pp. 620-624 (1981)