Why Does Compressed Air Cold

This frost all over the cylinder sort of cold is thermodynamics in action.

Why does compressed air cold.

Why does the compressed air can get so cold when you use it. As the liquid co2 is released it turns into a gas and makes your cartridge ice cold. Even a short blast is enough for frost to accumulate. Most techs were stuck in a back building connected by a ma.

If you compress it into a smaller space the energy also becomes more dense so the temperature has to rise at least temporarily. If we take a look at our earth s surface and its atmosphere we can interpret it as a sea of air. 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. Why does canned air get cold.

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. Co2 cartridges are highly compressed cylinders of liquid carbon dioxide. Changing from a liquid phase to a gas phase requires energy.

Updated april 24 2017. A pocket of gas sits at the top of the can preventing liquid from spraying out when the can is right side up. A given volume of gas has a certain amount of energy. The lower you are closer to sea level the higher the pressure because there will be more air pressing down on you.

Why does canned air get cold. Why does the compressed air can get so cold when you use it. I m not even sure if the liquid is electrically conductive but it boils off in seconds anyway. The higher you are in this ocean the lower the pressure would be.