[PSUBS-MAILIST] air compensation

[Cliff Redus via Personal_Submersibles]

 No ice blockage if you use scuba air.  Scuba air is dry, meaning very little water vapor.  Scuba air has a dew point of -50F which is very dry.  To get ice, the water vapor must condense to liquid water then be at a temperature below the freezing point.  Most psubbers use scuba air if they use a BIBS system that is attached to the air used to blow MBT.  As such, they would fill tanks with dry air from a local scuba shop or portable scuba compressor that has a dryer.
Cliff

On Tuesday, August 1, 2023 at 11:18:23 PM CDT, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 
 
 Cliff, (or anyone)Could a large flow through that small orifice cause it toice up? I don't personally know, but had ice forming on a tank valve when I was discharging the contents.Alan

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  On Wed, 2 Aug 2023 at 12:06 pm, Cliff Redus via Personal_Submersibles<personal_submersibles at psubs.org> wrote:   _______________________________________________
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