Gas shows heating effect on sudden expansion in vaccum
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thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect, ) describes the temperature change of a real gas or liquid (as differentiated from an ideal gas) when it is forced through a valve or porous plug while keeping them insulated so that no heat is exchanged with the environment.[1][2][3] This procedure is called a throttling process orJoule–Thomson process.[4] At room temperature, all gases except hydrogen,helium and neon cool upon expansion by the Joule–Thomson process; these three gases experience the same effect but only at lower temperatures.[5][6]
thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect, ) describes the temperature change of a real gas or liquid (as differentiated from an ideal gas) when it is forced through a valve or porous plug while keeping them insulated so that no heat is exchanged with the environment.[1][2][3] This procedure is called a throttling process orJoule–Thomson process.[4] At room temperature, all gases except hydrogen,helium and neon cool upon expansion by the Joule–Thomson process; these three gases experience the same effect but only at lower temperatures.[5][6]
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