Why Does Compressed Air Cold

Most techs were stuck in a back building connected by a ma.

Why does compressed air cold.

Why does the compressed air can get so cold when you use it. 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. The lower you are closer to sea level the higher the pressure because there will be more air pressing down on you. Even a short blast is enough for frost to accumulate.

This frost all over the cylinder sort of cold is thermodynamics in action. As the liquid co2 is released it turns into a gas and makes your cartridge ice cold. I m not even sure if the liquid is electrically conductive but it boils off in seconds anyway. A pocket of gas sits at the top of the can preventing liquid from spraying out when the can is right side up.

If we take a look at our earth s surface and its atmosphere we can interpret it as a sea of air. Skip navigation sign in. Why does the compressed air can get so cold when you use it. Why does canned air get cold.

The higher you are in this ocean the lower the pressure would be. Updated april 24 2017. I will take a stab at putting that in simple terms. 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. If this is true why use compressed air. Co2 cartridges are highly compressed cylinders of liquid carbon dioxide. Long ago i was a pc tech at a slightly fly by night mom pop joint.