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Date: Mon, 23 Oct 1995 09:37:23 +0300
To: chris@de*.de*.co*.uk*
From: Mark Caney <Mark.Caney@cy*.co*.cy*>
Subject: Re: Heat packs
Cc: techdiver@terra.net
At 16:00 21/10/95 GMT, you wrote:
         Rich Tuly got a fair old burn from one of these when a decent oxygen 
>content Eanx was used for suit inflation. As far as using them in an argon 
>filled suit - the lack of oxygen 'kills' the reaction. The best method we have 
>found to date was one of the battery powered suit heaters from Repetative
Diver 
>- not sure if they are still in business - maybe somebody on the list can
shed a 
>little light on that one

You can get burnt with these things if you put them close to the skin.
Between layers of clothing they are OK though. I don't think I have ever put
more than about 40% into my suit while I have been using them, but I have
certainly been up to 1.6 bar pO2 a few times, when they seem to burn hotter
but for less time.

I am not familiar with the heater you describe. Another gadget which came
and went was the WABA, (Warm Air Breathing Apparatus), which was a
contraption which warmed your breathing gas between the stages of a reg.
Theoretically a good idea, you waste a lot of calories warming gas just to
heat the surrounding water, but it never seemed to catch on.

Regards,

Mark Caney
Cyprus
Tel +357-6246680 (Time zone: GMT +2)

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