Question

show joules thomson effect is isoenthalpic process
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Answer 1

The Joule-Thomson (JT) effect is a thermodynamic process that occurs when a fluid expands from high pressure to low pressure at constant enthalpy (an isenthalpic process). ... Such a process can be approximated in the real world by expanding a fluid from high pressure to low pressure across a valve.

Joule-Thomson effect, the change in temperature that accompanies expansion of a gas without production of work or transfer of heat. At ordinary temperatures and pressures, all real gases except hydrogen and helium cool upon such expansion; this phenomenon often is utilized in liquefying gases.

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