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.

noun

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