compressed air?
Senior User
Joined: Jul 2003
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From: WA
The molecules get pushed closer together so there are more airs in a given volume. The pressure is actually how hard they hit the sides of the enclosure. They don't like being so close and try to achieve some distance. The closer they are the harder they fight .
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Senior User
Joined: Sep 2003
Posts: 176
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From: miami
Re: compressed air?
Originally posted by Vanhecht
what actually happens to air when it becomes compressed?
what actually happens to air when it becomes compressed?
Thats what happens to it at my house.
Bill in Miami.
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Elder User
Joined: May 2002
Posts: 794
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From: American by birth, TEXAN
now why the buildup of water in air compressers at the bottom when you have to empty it? are air molecules broken up?
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Joined: Sep 2001
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No, the air molecules are not broken up. There is moisture in the form of water vapor in the air that condenses on the inside of your tank when the air is pumped into your tank. You can find all kinds of info on air compressors and systems in the Garage forum by using the search function.
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Joined: Jul 2001
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From: Gainesville, FL
All,
The truth is, that you don't create heat while compressing air. More truefully, the heat that occupied one cubic foot now occupies one cubic inch. Of course there is heat from the motor driving the compressor and there are heat gains from friction, but you do not create heat.
Air and water share a happy medium at atomspheric pressure. That is not true at 120 psi. Water vapor is forced to its liquid phase and ,ergo, you have condensation. If we could maintain the initial compressed air temperature, the water vapor would mostly stay in a vaporous phase but compressed air starts to reject its heat to the atomshpere immediately and a cooling effect drives the compressed water vapor to liquid.
I hope this help?
KingFisher
The truth is, that you don't create heat while compressing air. More truefully, the heat that occupied one cubic foot now occupies one cubic inch. Of course there is heat from the motor driving the compressor and there are heat gains from friction, but you do not create heat.
Air and water share a happy medium at atomspheric pressure. That is not true at 120 psi. Water vapor is forced to its liquid phase and ,ergo, you have condensation. If we could maintain the initial compressed air temperature, the water vapor would mostly stay in a vaporous phase but compressed air starts to reject its heat to the atomshpere immediately and a cooling effect drives the compressed water vapor to liquid.
I hope this help?
KingFisher