Best use of a Stirling engine I have seen, was implemented by a friend
of mine in Germany about 15 years ago. He added a miniature Stirling
engine he had made (it could be held in one's hand) to his butane
powered barbecue grill. The heat of the grill drove the Stirling engine,
which in turn operated a rotisserie. So as the meat was turning, one
could hear the little Stirling engine quietly chugging away.

Very clever, those Germans! :)

Bob Wilson
TIR Systems Ltd.
Vancouver.

-----Original Message-----
From: Ted Rook [mailto:t...@crestaudio.com] 
Sent: June 10, 2002 1:50 PM
To: <
Subject: (off topic) Stirling cycle


Chris,
what is the Stirling cycle?
short tongue in cheek reply: a well kept secret!

in truth it is an external combustion engine which uses the thermal
expansion and contraction of gas to produce motion.

typically the system is sealed,
there is a 'hot' end and a 'cold' end,
The energy input in the form of the temperature differential can be
extracted as work from a piston and crank. 
Alternatively put work into the shaft and you can maintain a temperature
differential......

try searching the web for Stirling cycle

the amount of information available has increased significantly in the
past year or so

there is hope :-)

I believe people under estimate the incoming energy that penetrates the
cloud cover. I don't have figures but I think long wave infrared reaches
the ground through clouds. It can be focused by solar collectors.

The oil/gas/electricity utilities and their PR departments would like us
to believe we are helpless and dependant on their massive
infrastructure.

I believe they make sure we have the limitations of photovoltaic cells
and rechargeable batteries rammed down our throats to discourage
independent thinking.

Electrolysis, fuel cells, flywheels, solar collectors, stirling engines,
wind and wave power, all are coming and will be usable on a small scale
by individual households.
I plan to power/heat/cool my residence with solar energy and disconnect
the utility lines in the foreseeable future.



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