[align=center][/align][align=center][/align][align=center]Space, sit down & Shut Up[/align][align=center]It's time to learn something you didn't know ![/align][align=center]There will be a MCF test later on this subject [/align][align=center][:-][/align][align=center]




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How Air Conditioning Works [/align][align=center][/align][align=center]The condensed version [/align][align=center][/align][align=center]



by Professor Jeff Karr
[/align][align=center][/align][align=center]There was a time not all that long ago when automotive air conditioning was considered something of a luxury. Today's drivers don't share that view. Now standard on just about every make and model of car, truck and SUV, air conditioning is as familiar as, well, the steering wheel.
[/align][align=center][/align][align=center]The almost universal acceptance of air conditioning has tracked the gradual advancement of comfort and luxury items in cars. In the early days of the automobile when even a heater was considered a luxury item, the concept of reveling in 70-degree comfort on a sweltering 110-degree Tucson summer afternoon was the stuff of science fiction. Today our "baseline" for comfort and features has ascended to spectacular heights. Gotta have a good sound system, cruise control, anti-lock brakes, and all sorts of air bags too. Air conditioning is practically a given.
[/align][align=center][/align][align=center]Just exactly how does air conditioning make goose-bump-inducing cold air when the outside temperature is hot enough to cook a desert donkey clear through in fifteen minutes? For starters, it doesn't actually make cold air, but instead it removes heat from the car's interior and dumps it outside. The principle is the same used in home air conditioning, refrigerators and most other kinds of refrigeration. But how is that possible if it's flaming hot outside? Glad you asked.
The Ins and Outs of Cool [/align][align=center][/align][align=center]Boiled down to its essentials, air conditioning is a closed-loop system of tubing filled with a refrigerant that cycles from liquid to gaseous state as it circulates round and round. Automotive air conditioning has components both inside the interior and in the vehicle's engine compartment. Behind the instrument panel, warm, humid interior air is blown over a heat exchanger called an evaporator, which has cold, low-pressure liquid and gas refrigerant flowing through it. The refrigerant is warmed by the interior air flowing over it, and the air is cooled by the refrigerant. With the temperature drop, the air can no longer carry as much moisture, so water droplets condense on the evaporator and the humidity of the air is reduced. That's nice, particularly in hot, humid weather. The liquid water is drained out onto the ground, which explains that harmless puddle of clear liquid you sometimes notice under your car when the air conditioning has been running. To adjust the temperature of the air flowing from the vents, the dashboard-mounted climate controls allow the cold air flowing over the evaporator to be blended with un-chilled air.
[/align][align=center][/align][align=center][b]As the refrigerant absorbs heat in the evaporator, some of it begins to boil (it has a much lower boiling point than water). This vapor is carried to the compressor unit under the hood that is powered by the engine. The compressor pressurizes the vapor, which raises its temperature at the same time (Basic physics: if you increase the pressure of a gas, its temperature will aut

 

hahaha test me space im certified in this stuff and ridiculously as it is i am also IMACA certified

 

 

feedin ur brain eh? well u could always use either a brain slug or some sort of telephathy or are you not that kind of alien.......