Compressed air heats? How do you figure? Ever feel the air coming out of your tire? Is it hot? NOPE cold! Ever feel the air from an air tool? Is it hot? Nope! How about the compressed air in the cans for spraying off electronics? If either one of those senarios gives you hot air you have some problems.
And actually, an old hot rodders trick is to keep an air tank that will send compressed air through the intake for cooler air down the strip.

 

Well yes,as it's compressed air heats dramatically. But you're correct as all gasses do after compression, when released to atmospherice pressure they cool. It really depends on the gas, and the level of compression. Ie, the greater the compression, the more rapid the expansion when released and the greater the cooling. Now, what type of gas you use REALLY makes a difference there. For plain old air, you'll need a big bottle, and a pretty powerful compressor under the hood to get any real cooling. Otherwise you're blowing air on air. Now with freon and such it's a different story.
In the interest of keeping it simple, small, and inexpensive you can get a LOT of evaporative type cooling from water mixed with alcohol. Real efficient, and goes a long way with a good 2 quart quart bottle. Like I said, way more bang for your buck, and more efficient that a gas based compressor system.

 

are u guys takin about an intercooler water spray

 

Yep, quick, cheap and easy way to get some hp.

 

i was thinking of doin this it wont be an good as a spray but

i met someone who put a electic fan on the intercooler to help him on the low speed drives

 

Hey PandaX...do a combo!

 

Check the sig...

 

nice is your mister homemade

 

Compressed air is hot. That is why you have an intercooler, to cool that hot compressed air.

 

The simplest example I can think of is the diesel engine.. What keeps those cylinders firing, after the initial glow plug action? The high degree of compression in those cylinders. (anywhere from 14:1 to 24:1) The fuel mixed with the air starts the combustion, and it repeat, and repeats..All from that highly compressed, and resultantly HOT air.