The circuit is really not too difficult. The important thing is that you will need a spool of magnet wire with a LOT of turns. Continue reading
Stirling engine example (“Ericsson style hot air engine” by Rob Skinner on wikipedia.org)
This past week, we had the president of Cool Energy, Sam Weaver, speak to us at work about his commercial Stirling engines. I had known about Stirling engines for a while but was unsure on their specific operation. Sam gave a great talk along with an educational demonstration of a small, tabletop engine.
That’s when it dawned on me. What about having students build their own version of a tabletop Stirling engine? It’s a great way to show how the expansion and contraction of a gas can be transformed into rotational energy. Continue reading