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Twin inline thermoacoustic Stirling engine
Duration: 2:38
A thermoacoustic Stirling engine with twin cylinders, powered by two small methylated spirits burners. Heating one end of a tube of closely coiled wire (a "stack") causes the stack to resonate, and generate sound waves (these sound waves are inaudible to the human ear). Sound waves are basically fluctuations in pressure, and we can use these fluctuations in pressure to drive a piston in and out. Connecting the pistons to a flywheel is not necessary, the pistons will oscillate in and out without a wheel, but the engine is more attractive with a rotating wheel.