Mike:
Fill a balloon with water. place a small rock on top of the balloon. The
weight of the rock is compressing the water. (ridiculously small amount, but
nevertheless the separation of molecules is less). (use a piston and a rock
if the elasticity of the balloon walls give you pause.
There it will sit forever (or until the water evaporates throught the
balloon), taking no energy and compessing the water. Fairly efficient I
would say. Efficasy is a different matter.
Mark Hooper
-----Original Message-----
From: Mike Kitchener
To: 105671.471@compuserve.com
Cc: Triumphs@autox.team.net
Sent: 27/09/01 4:05 AM
Subject: Re: vacuum advance/retard differences? Ha Ha! Zero!
Dave Massey wrote ,
> The same principal applies to
> steam engines. Compress water, boil it, decompress the steam extract
a
> portion of the heat energy used to boil the water.
>
> The efficiency of the process is a measure of how much more energy is
> extracted from the xpansion process than is used in the compression
> process.
Dave ,
Is it energetically efficient trying to compress water ?
Cheers
Mike
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