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.
PROFESSOR: Last few lectures, and we started to see some of the consequences and looked at simple changes, transformations ofexpansion and mixtures ofliquids and gases.
教授:之前几节中,我们开始看到一些过程及结果,混合的简单的变化,关于气体,液体的扩散。
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Because of the large expansion ratio of liquid to gas with cryogenic liquids, it is very important to provide adequate ventilation where cryogenic liquids are stored and used.