Molecular sieve pressure relief
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When the molecular sieve releases pressure, the outlet temperature is much lower than during adsorption. Is this because pressure release is caused by the endothermic desorption of the substances adsorbed by the molecular sieve?
1. The effect of the approximate throttling effect. 2. There are two methods for regenerating molecular sieves: heating regeneration and pressure reduction regeneration. During pressure reduction, some of the adsorbed substances are released, and this release process is endothermic, so the temperature decreases. The above are my personal opinions; I welcome corrections from those more knowledgeable!
Lz has already given the answer. It is indeed because of the heat absorbed during desorption
Reply to 4# gaoang2008666: Is there a throttling effect? When pressure is released, doesn’t the gas flow from the adsorber with the larger volume into the pipe with the smaller volume? Where is the throttling taking place?