Its fun to see how people look and react when they press a little shot for this stirling engine. Place it on the cup filled with hot water, lightly press the flywheel and get the flywheel to run, and then it works like a magic. All your guests want to know what happened, ice-breaking success. What a wonderful toy!
Be admired and talk more by your friends when you have this magical stuff.
How it works:
This is traditionally known as an external combustion engine, unlike an internal combustion engine where heat is entered by combustion of a fuel in the body of the working fluid. Unlike using water in the liquid and gaseous phase as a working medium through the steam engine, the Stirling machine contains a fixed amount of permanent gaseous liquid such as air or helium. As with all heat engines, the general cycle is to compress cool gas, heat the gas, expand the hot gas, and finally cool the gas before the cycle is repeated.