Why Does Compressed Air Cold

Why does the compressed air can get so cold when you use it.

Why does compressed air cold.

The higher you are in this ocean the lower the pressure would be. I m not even sure if the liquid is electrically conductive but it boils off in seconds anyway. Updated april 24 2017. 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.

A given volume of gas has a certain amount of energy. As the liquid co2 is released it turns into a gas and makes your cartridge ice cold. Changing from a liquid phase to a gas phase requires energy. Skip navigation sign in.

The lower you are closer to sea level the higher the pressure because there will be more air pressing down on you. If this is true why use compressed air. Most techs were stuck in a back building connected by a ma. I will take a stab at putting that in simple terms.

Co2 cartridges are highly compressed cylinders of liquid carbon dioxide. If we take a look at our earth s surface and its atmosphere we can interpret it as a sea of air. Long ago i was a pc tech at a slightly fly by night mom pop joint. This frost all over the cylinder sort of cold is thermodynamics in action.

A pocket of gas sits at the top of the can preventing liquid from spraying out when the can is right side up. Why does canned air get cold. If you ve ever used a can of compressed air to blow dust out of your keyboard you ve experienced how quickly the can gets cold. If you compress it into a smaller space the energy also becomes more dense so the temperature has to rise at least temporarily.