Question

In the drying process, which of the following parameters is the same as the adiabatic saturation temperature:

• A. Absolute humidity
• B. Dew point
• C. Relative humidity
• D. Wet bulb temperature

Hint:

The wet bulb temperature represents the adiabatic saturation temperature, as both involve cooling due to evaporation without external heat exchange.

Answer 1

The Correct Option is D

Step 1: Understanding adiabatic saturation temperature. The adiabatic saturation temperature is the temperature at which air becomes saturated with water vapor through the evaporation process under adiabatic conditions (without heat exchange with the surroundings). 

Step 2: Relation to wet bulb temperature. The wet bulb temperature is the temperature measured by a thermometer covered with a wet cloth, where the evaporation of water cools the thermometer. Under adiabatic conditions, the wet bulb temperature equals the adiabatic saturation temperature. 

Step 3: Why other options are incorrect. 
- (A) Absolute humidity: Refers to the mass of water vapor in a given volume of air, unrelated to temperature. 
- (B) Dew point: The temperature at which air becomes saturated and condensation begins, different from the wet bulb temperature. 
- (C) Relative humidity: The ratio of the actual water vapor content to the maximum possible water vapor content at a specific temperature, not the same as the adiabatic saturation temperature.