Why Is Compressed Air Cold Upside Down

Holding it upside down makes the pressure release faster because.

Why is compressed air cold upside down.

Jul 15 2003 4 the can freezes as the pressure inside is released. In other words it begins to boil. And when you have it down below it can not blow out. Similarly turn the can upside down and you re shooting out the liquid propellant instead.

The liquid which is sprayed while the can is upside down absorbs more heat as it changes from a liquid to a gas when sprayed. Why does canned air get cold. Because these gases are compressed to liquid form when you turn the can upside down and press the nozzle liquid will come out before it turns to gas. Removing heat and making the can or nozzle cold.

Gases compressed into liquids absorb much energy upon vaporization which is why under normal use the can becomes quite cold to the touch. Someone else may be able to explain it more accurately but i think that s the general idea. Canned air is one of many inhalants that can be abused. When breathed in these gases can displace the oxygen in your lungs.

Turn that cup upside down and you get all that cold slurpee goodness. When you turn the can upside down the liquid is forced out instead. Begingroup georg it s called compressed air but it s not actually 78 nitrogen. As you have noted this liquid quickly evaporates because is is a gas at room temperature.

Jul 15 2003 9 physics. Turning the can upside down and spraying does not allow for the liquid to immediately vaporize and therefore turns the can into a freeze spray. When compressed into the can this mixture takes fluid form. A pocket of gas sits at the top of the can preventing liquid from spraying out when the can is right side up.

This same reason causes compressed air to feel cold as it expands and draws heat from its surroundings. Apr 28 2000 15 995 1 81.