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Scuba Diving on the Great Escape Southern California Live-Aboard Dive Boat


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Posted by Ken Kurtis on February 23, 2007 at 12:24:13:

In Reply to: Re: Re: Air fill in under 30 seconds ? posted by Chuck Tribolet on February 23, 2007 at 01:00:32:

Chuck, I think you've got some thing backwards here.

Increasing the pressure in a tank will cause it to heat up. Decreasing the pressure in a tank will cause it to cool off.

The tank being filled will heat up. How much it heats up depends on the speed of the fill. Faster fill, more heat.

The banks will cool down. How much they cool down depedns on the spped with which tyhe;'re drained.

And there's probably some mathematuical formula dealing with conversion of enerngyu where you can show that the heat energy absored by the filling tank is equal to the heat loss from thre draining tank, but that's way beyond anything I can come up with.

Bottom line is it's too fast a fill. CGA recomeddations are 300-550 psi/minute.

Ken Kurtis
Owner, Reef Seekers Dive Co.
Beverly Hills, CA
www.reefseekers.com



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