joule-thomson effect

noun Thermodynamics.

  1. the change of temperature that a gas exhibits during a throttling process, shown by passing the gas through a small aperture or porous plug into a region of low pressure.


  1. a change in temperature of a thermally insulated gas when it is forced through a small hole or a porous material. For each gas there is a temperature of inversion above which the change is positive and below which it is negativeAlso called: Joule-Kelvin effect
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