Why Does Compressed Air Cold

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 compressed air cold.

Long ago i was a pc tech at a slightly fly by night mom pop joint. Even a short blast is enough for frost to accumulate. This frost all over the cylinder sort of cold is thermodynamics in action. 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. Most techs were stuck in a back building connected by a ma. The higher you are in this ocean the lower the pressure would be. Why does canned air get cold.

If this is true why use compressed air. Co2 cartridges are highly compressed cylinders of liquid carbon dioxide. If you compress it into a smaller space the energy also becomes more dense so the temperature has to rise at least temporarily. Updated april 24 2017.

Skip navigation sign in. Why does the compressed air can get so cold when you use it. Why does the compressed air can get so cold when you use it. The lower you are closer to sea level the higher the pressure because there will be more air pressing down on you.

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. I m not even sure if the liquid is electrically conductive but it boils off in seconds anyway. Changing from a liquid phase to a gas phase requires energy. If we take a look at our earth s surface and its atmosphere we can interpret it as a sea of air.