Stirling Engine - How It Works In Simple Terms

No jargon explanation how a Stirling engine works. Forget what you know about gas engines, diesels and steam engines. The Stirling engine works more like an air conditioner than any of those other engines.
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WARNING: Hot parts, open flame, flammable liquids. Danger of fire and burns. Not for children. This model vibrates badly and the fuel can gets way too hot. Use proper precaution. If you don't know, learn first or do not do it.
Table-top size models produce only a tiny fractions of the power provided by a similarly sized steam or gas engine. Reverend Stirling was appalled by the number of his parishioners killed or maimed by boiler explosions in the early days of steam. He set out to build an engine that would not require or produce high pressures during operation. His "air engine", now known as the Stirling, was the result. Today, its efficiency (as high as 50% in some examples) and ability to use almost any heat source, including "waste" heat, allow it to fill niches that steam and gas engines cannot. - "Marv"