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From: "A.Appleyard" <A.APPLEYARD@fs*.mt*.um*.ac*.uk*>
To: techdiver@terra.net
Date: Mon, 23 Oct 1995 09:19:23 BST
Subject: Re: Heat packs

  At 16:00 21/10/95 GMT, someone wrote:
> Rich Tuly got [3rd-degree burns] from [a heat pack inside his drysuit] 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....

In rebreathers the action of the absorbent makes heat as a byproduct. This is
useful in cold water. (So much heat that some industrial rebreathers for use
in hot dry places have a second canister containing a coolant.)

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