When Air Is Compressed, Its Temperature
When Air Is Compressed, Its Temperature . The frequency of atomic collisions decrease as air expands, therefore the air gets cooler. Air pressure in the open atmosphere always decreases with an increase in altitude. Combustion and flame by swati ghansela from www.slideshare.net During compression, the volume (v) of a gas decreases. Depending on the application, the compressed air that leaves an air compressor system can be hundreds or even thousands of degrees. When this happens, the pressure (p) of the gas increases if the number of moles (n) of gas remains constant.