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Adiabatic Saturation Temperature Or Thermodynamic Wet bulb Temperature

 when the unsaturated air flows over a long sheet of water in an insulated chamber, the water evaporates, and the specific humidity of the air increases. Both the air and water are cooled as evaporation takes place. The process continues until the energy transferred from the air to the water is equal to the energy required to vaporize the water. When this point is reached , thermal equilibrium exists the respect to the water, air and water vapor and consequently the air is saturated. The equilibrium temperature is called the adiabatic saturation temperature or the thermodynamic wet bulb temperature.




 


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