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[DPRG] Has anyone heard of phase change muscles?
Subject: [DPRG] Has anyone heard of phase change muscles?
From: Rodent
daweasel at swbell.net
Date: Fri Sep 21 18:53:10 CDT 2001
Yeah, its called a Stirling engine. Invented way back in the late 1800's I
think. Works by temperature differential. Really cool to see one run. A
well-made example will run with heat from the palm of you hand.
http://www.sesusa.org/
http://personal.atl.bellsouth.net/atl/r/_/r_rice2/my_engines/engines.html
----- Original Message -----
> My first attempt to post to the list, here. Ever heard of a heat pipe, a
> tube with liquid in the bottom and a gas above it? The liquid boils above
> room temperature. When the liquid turns to gas at the bottom, it bubbles
up
> to the other end, cools, condensed, and falls back to the bottom. An
example
> of this effect can be see in those Christmas tree lights with a tube above
> them that bubbles.
>
> I was wondering about applying this to locomotion. A piston might be
pushed
> due to heating a phase change of a liquid/gas in a chamber under the
piston.
> Cooling to room temperature would cause it to contract again. Anyone heard
> of such an idea before?
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