Study guides, Class notes & Summaries
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airconditioning basics
- Summary • 7 pages • 2019
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Air conditioners use refrigeration to chill indoor air, taking advantage of a remarkable physical law: When a liquid converts to a gas (in a process called phase conversion), it absorbs heat. Air conditioners exploit this feature of phase conversion by forcing special chemical compounds to evaporate and condense over and over again in a closed system of coils.
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car engine
- Study guide • 14 pages • 2019
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Have you ever opened the hood of your car and wondered what was going on in there? A car engine can look like a big confusing jumble of metal, tubes and wires to the uninitiated. 
You might want to know what's going on simply out of curiosity. Or perhaps you are buying a new car, and you hear things like "3.0 liter V-6" and "dual overhead cams" and "tuned port fuel injection." What does all ¬of that mean?
¬¬In this article, we'll discuss the basic idea behind an engine a¬nd then go i...
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