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OK, I'm not a WKPP diver, nor am I prone to flaming, I'm just a
neurophysiologist.
Query, have you ever read ANYTHING about gas physiology?
Wendell Grogan, MD
"Michael J. Black" wrote:
>
> Note: forwarded message attached.
>
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> ------------------------------------------------------------------------
>
> Subject: Re: Helium
> Date: Mon, 20 Mar 2000 13:43:58 -0800 (PST)
> From: "Michael J. Black" <mjblackmd@ya*.co*>
> To: Aquanaut Mail <techdiver@aquanaut.com>
>
> Have been gone for a few days, diving, and came back to find
> that helium has a higher heat capacity and heat conductivity
> than air, but doesn't heat up as much because it is less dense
> (lower mass for the same volume). Is that about right? and
> if so why didn't someone just say so in the first place?
>
> Now we know helium, being the rapid diffuser that it is, is
> quicker to off-gas than nitrogen. And if you're worried about
> slow nitrogen desaturation after a dive, and want to minimize
> risk of bubble formation (of any gas), then it would be ideal
> to replace the nitrogen with helium. So going back to Ben
> Wiseley's original question: assuming cost is no object, the
> ideal mix for a 60ft dive is heliox, because nitrogen desat.
> is eliminated completely. And I could safely do my bike race
> the next day, or even that afternoon. Agree?
>
> Would like to hear from someone who has done this. No rants
> please (in other words, no Scott posts, i.e. information only
> without anencephalic gibberish). I know someone's going to
> shout trimix you idiot, but the goal is to quickly eliminate
> the risk of bubble formation, completely. Also, to avoid
> confusion about insulating gas, let's assume it's a wet suit
> dive (or a dry suit dive with Argon). MJB
>
>
>
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