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sterling engine
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how does the sterling engine work
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For more on marking an answer as the "Best Answer", please visit our FAQ.Gas Expansion. A Stirling engine has a sealed cylinder with one part hot and the other cold. The working gas inside the engine (which is often air, helium, or hydrogen) is moved by a mechanism from the hot side to the cold side. When the gas is on the hot side it expands and pushes up on a piston. When it moves back to the cold side it contracts.
They are incredibly efficient, able to get upto 50% efficient (this is v. good!). I have always wanted one that can run on the heat of your hands or strong sunlight (not that you get any round here!).
Andy
http://www.bbc.co.uk/science/scienceshack/articles
/bigbuilds/buildupdates/u_oilrunsout03.shtml go here and let adam explain it (vid 3)
/bigbuilds/buildupdates/u_oilrunsout03.shtml go here and let adam explain it (vid 3)