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Removing Heat with Air

Calculating heat removed with air by measuring the wet bulb temperature.

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The wet bulb temperature is a measure of the total heat in moist air - the mixture of dry air and vapor.

If the initial and final wet bulb temperatures in a heating or cooling processes are known - the heat transported by the air in the processes can be calculated by using the charts below.

Heat Transported by Air - kJ per kg

heat removed by air - wet dry bulb temperature - kJ

Example - Heat Removed by Moist Air

Air with initial wet bulb temperature 30oC (green line) is cooled down to a final temperature 10oC. From the diagram above we can estimate that

aprox. 70 kJ

of heat is removed.    

Heat Transported by Air - kJ per m3

heat removed by air - wet dry bulb temperature - kJ

Heat Transported by Air - Btu per lb

heat removed by air - wet dry bulb temperature - Btu

Heat Transported by Air - Btu per Cu. Ft.

heat removed by air - wet dry bulb temperature - Btu per cubic feet

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