Change in temperature with elevation

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Presentation transcript:

Change in temperature with elevation (Application of adiabatic changes of states) adiabatic expansion Work done on the surrounding air reduction of internal energy reduction of temperature adiabatic processes Masses of air are rapidly moved by winds and convection We are going to show the experimental fact that temperature drops by 10K/km

h h A Mass of the air contained in the volume element air in good approximation considered as an ideal gas

Air transport adiabatic with Note: P=P(h) and T=T(h) Const. With

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