[PSUBS-MAILIST] air compensation

[Cliff Redus via Personal_Submersibles]

 Alan for sure when the dry air expands after exiting the orifice, Joule Thompson cooling occurs which cools down the first state regulator.  The air in the room is not dry, it has a certain relative humidity.  The air around the regulator then is cooled dropping it below the dew point of the air so water vapor in the room air near the surface condenses to free water.  Because the air temperature near the surface of the regulator has dropped below the freezing, the free water forms ice crystals.   
Cliff
    On Wednesday, August 2, 2023 at 04:56:32 PM CDT, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Cliff,I could have been seeing ice form from the condensation in the room where I was emptying the tank. The tank valve orifice became freezing cold due to the fast rate of air leaving it, & moisture in the atmosphere froze on it.(Maybe)Alan

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  On Thu, 3 Aug 2023 at 1:04 am, Cliff Redus via Personal_Submersibles<personal_submersibles at psubs.org> wrote:   _______________________________________________
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