液体变成气体来工作，以运用液体的潜热，所以这不是，真正像焦耳-汤姆逊膨胀一样工作，这是真实的气体，不像焦耳。
Real refrigerators actually work with liquids that go into gases so use the latent heat of the liquid, so it doesn't really work like the Joule-Thomson expansion. So this is real.
当原料气流过节流件时，产生焦耳-汤姆逊膨胀及降温，使部分气体和大部分水蒸汽液化。
As the feed stream flows through the choke, the resulting J-T expansion and cooling causes some gas and most of the water vapor to liquefy.
对理想气体，焦耳-汤姆逊膨胀过程中温度如何变化？
What happened to the temperature in a Joule expansion in ideal gas?
如果井口压力超过管道所需的压力，则可使气体通过节流件，以等焓焦耳-汤姆逊膨胀获取冷量。
If the wellhead pressure exceeds that of the pipeline, then the gas can be passed through a choke or throttled in a constant-enthalpy Joule-Thomson expansion to provide cooling.
如果井口压力超过管道所需的压力，则可使气体通过节流件，以等焓焦耳-汤姆逊膨胀获取冷量。
If the wellhead pressure exceeds that of the pipeline, then the gas can be passed through a choke or throttled in a constant-enthalpy Joule-Thomson expansion to provide cooling.
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