Engine That Uses Ice For "Fuel"

[tsbrownie]

mklotz, Marv suggested this. This Stirling engine will run on ice as "fuel". Stirling engines run on a difference between 2 temperatures. By using ice for the low temp, the Stirling engine operates by moving heat from the air into the cold sink / ice. This is a safe alternative to hot water to demonstrate the engine to children.
The amount of ice in the video allowed it to run for over 2 hours (depends on several factors, like room temp, engine speed, etc.)

OK, the "fuel" for this engine is TECHNICALLY mostly hydrogen being fused in the sun because the electricity to freeze it came from solar, but it's a "fuel" in the sense it is consumed to create motion.