# Difference between revisions of "Joule-Thomson effect"

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

− | :<math>\mu_{\mathrm JT}\vert_{p=0} = ^0\!\!\phi = B_2 -T \frac{dB_2}{dT}</math> | + | :<math>\mu_{\mathrm JT}\vert_{p=0} = ^0\!\!\phi = B_2(T) -T \frac{dB_2(T)}{dT}</math> |

==References== | ==References== | ||

#[http://jchemed.chem.wisc.edu/Journal/Issues/1981/Aug/jceSubscriber/JCE1981p0620.pdf Thomas R. Rybolt "A virial treatment of the Joule and Joule-Thomson coefficients", Journal of Chemical Education '''58''' pp. 620-624 (1981)] | #[http://jchemed.chem.wisc.edu/Journal/Issues/1981/Aug/jceSubscriber/JCE1981p0620.pdf Thomas R. Rybolt "A virial treatment of the Joule and Joule-Thomson coefficients", Journal of Chemical Education '''58''' pp. 620-624 (1981)] | ||

[[category: classical thermodynamics]] | [[category: classical thermodynamics]] | ||

[[category: statistical mechanics]] | [[category: statistical mechanics]] |

## Revision as of 12:46, 12 July 2007

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