The Air Engine / Mr. Denjiro's Happy Energy!
DENJIRO: These are tools that use compressed air. Let's use this pneumatic staple gun here. Since there's no need for batteries or motors when using compressed air, the tool is light. You can run an engine using compressed air as well. Here's a car with an air engine. First, I'm going to use a pump to compress air. Now, let me give the car a little push.
So how does the engine run? Let me explain using this model. This part here is connected to a tank that has compressed air. The red valve is closed due to air pressure. The green piston is connected to the wheel by a blue crank. The engine won't move as is. The wheels turned when I pushed the car, causing the piston to move. The piston then touched the valve, causing it to open. This caused compressed air to move in and push the piston back. Since the piston moved away, the valve closed. The compressed air was then let out from the exhaust port. The engine moved because these movements were repeated.
Now, let's perform an experiment on generating electricity using an air engine. I've set up a model of a house. The air engine is connected to a generator. Let me start the engine. The lights on the house turned on! As you can see, compressed air has lots of uses. For example, this air cannon, which you might see at a concert firing confetti, uses compressed air as well.
I hope energy will bring you all happiness. Our magic word is "Happy Energy!"