[Space] Resurrecting chemical hand warmers

Christie Dudley longobord at gmail.com
Mon Mar 8 11:44:05 PST 2010


Wow, I don't want to describe this as "epic fail" but this experiment was
certainly enlightening.

The chemical hand warmers sure use a lot of air.  With under an hour of
experimentation, the hand warmer was completely cold and the bottle was
partially collapsed.  I'd guess that all the oxygen got sucked out and
that's the 78% nitrogen I'm seeing in there.  I guess this stuff would be
good for keeping food fresh, eh?

Christie
_______
"We also briefly discussed having officers replaced by very small shell
scripts." -- Noisebridge meeting notes 2008-06-17

The outer bounds is only the beginning.
http://www.flickr.com/photos/genriel/sets/72157623376093724/


On Wed, Mar 3, 2010 at 5:13 PM, Christie Dudley <longobord at gmail.com> wrote:

> So why not use a soda bottle filled with air and chemical hand warmer stuff
> in the center of the payload for heat?  We all know soda bottles can hold a
> lot of pressure.  The hand warmers need air and can be in that sealed
> container.  We don't have to have our other stuff in the pressure container
> in order for the hand warmers to warm them.  We just need thermal
> conductivity, which plastic is OK at.
>
> I'm thinking one of the smaller plastic soda bottles would have sufficient
> air for our hand warmers, wouldn't you think?  It'd be worth a shot.  Cheap.
> simple. etc. etc.
>
> Christie
> _______
> "We also briefly discussed having officers replaced by very small shell
> scripts." -- Noisebridge meeting notes 2008-06-17
>
> The outer bounds is only the beginning.
> http://www.flickr.com/photos/genriel/sets/72157623376093724/
>
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