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  • 1 year ago
dailymotion
daily motion
dailymotion love island season 7
prens 3. sezon izle
dailymotion love island
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Transcript
00:00If you place a bowl of ice in your room, as the ice melts, it continuously absorbs heat from its surroundings, cooling the air around it.
00:07That's actually the basic principle of air conditioning, but relying on melting ice alone, far too slow.
00:13So you get clever, you bring in a fan and blow air over the ice.
00:16The airflow speeds up the melting, and sure enough the room feels noticeably cooler.
00:21But there's a problem, the ice always melts away, replacing it over and over is a hassle.
00:25Then inspiration strikes, why not replace the ice with something better, Freon.
00:30Freon is a gas at room temperature, but when compressed into a high pressure tank, it becomes a liquid.
00:36To make the system run continuously, you design a closed copper tube circuit, and fill it with Freon.
00:41Now the heart of refrigeration is born.
00:44When liquid Freon flows through the indoor copper coils, the pressure drops.
00:48It quickly evaporates, absorbing large amounts of heat from the air inside, cooling the room in the process.
00:53The now gaseous Freon, carrying that heat, flows outdoors.
00:58That's how heat is transported out.
01:00But for Freon to be reused, you'll need to do more.
01:03So you install a compressor in the outdoor unit.
01:05As the gaseous Freon passes through, it's heavily compressed, causing its temperature to rise, up to 80 degree or more.
01:12To cool it back down, you run it through a coil condenser with a fan, where it releases heat into the open air, and condenses back into a liquid.
01:19It then flows back indoors, but it's still a bit too warm.
01:22So you add an expansion valve to the indoor coils.
01:25As the high pressure liquid passes through, its pressure suddenly drops, and its temperature plummets.
01:30Now, it's ready to flow again through the loop.
01:33Starting a new cycle of cooling.
01:34To spread the cold air faster, you attach a fan near the indoor coils.
01:38And for precise control, you install a thermostatic sensor near the expansion valve, to regulate the temperature automatically.
01:44Finally, you combine the entire setup into one indoor unit and one outdoor unit, connected by those copper tubes.
01:51Congratulations!
01:52You've just invented the air conditioner.

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