Re: Air Use Calculations

[hylands@ibm.net (Jon Hylands)]

On Sat, 30 Oct 1999 10:41:42 +1000, "Scott L" <diver@chilli.net.au> wrote:

> Chris, do you mean you are not going to have anything to add Oxygen and
> scrub CO2? I dont think it would have much time underwater ;)

The guy who built the VASH used to cruise around on the surface (with the
canopy sealed) for about 45 minutes before he started feeling dizzy. That's
a really small volume of air he was breathing.

The trick is to try it a few times with the sub in your garage, with
someone standing outside watching you through the portholes. Put a few CO2
and O2 meters in, and watch what happens.

Personally, I think the cost of adding a simple soda scrubber with a fan
would be insignificant compared to the rest of the sub, and it would give
you much better life support possibilities...

Later,
Jon

--------------------------------------------------------------
   Jon Hylands      Jon@huv.com      http://www.huv.com/jon

  Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
           http://www.huv.com