ON-SCREEN TEXT: SNOW?!
DENJIRO: This may look like snow, but it's actually tiny pieces of dry ice. This tank contains liquid carbon dioxide. When we open the valve, the liquid carbon dioxide gushes out and turns into gas. There's a sudden drop in temperature when this happens, and the carbon dioxide turns into dry ice. An air conditioner actually uses the same principle to cool down a room.
Today, I'm going to explain using this spot cooler. We see a pipe here. This is the same as the indoor unit of an AC. This pipe is connected to the backside. This is the same as an AC's outdoor unit. Inside the tube is a gas that acts as a refrigerant. It is compressed with this compressor here and circulated through the pipe. This side of the spot cooler releases heat. The gas that is compressed by the compressor is hot. By releasing that heat, the gas turns into liquid. The other side of the cooler is the side that generates cold air. The liquefied gas vaporizes and cools the air. A temperature difference is created by having gas circulate through the tube.
Now, let me show you an experiment to demonstrate how exactly the temperature difference is being created. This bag is filled with gas. I'm going to suck out the gas with this modified bicycle pump and send it to a plastic bottle. The gas has accumulated in the bottle as a liquid. If we look at it with a thermal camera, we see that the temperature is rising. Now, we're going to release the liquefied gas into the bag and turn it into a gas. We can see with the thermal camera that the temperature dropped. By changing a gas into liquid and back, an air conditioner creates a temperature difference. A heater reverses this process.
I hope energy will bring you all happiness. Our magic word is "Happy Energy!"
Негізгі бет Ойын-сауық How Air Conditioners Work / Mr. Denjiro's Happy Energy!
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