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Chemical Engineering Basics - Engineering

Q1:

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

A partial pressure of water vapour is less than the total pressure.

B humidity is < 100% & dew point temperature of air has not reached.

C dew point temperature of air has not reached & air is not saturated fully.

D air is fully saturated.

ANS:D - air is fully saturated.

When we say that air is fully saturated, it means that the air is holding the maximum amount of water vapor it can at a given temperature and pressure. In other words, the relative humidity of the air is 100%. At this point, the air cannot hold any more water vapor, so if the temperature decreases or if more moisture is introduced into the air, condensation will occur. This condition is often reached when the dry bulb temperature and wet bulb temperature of the air are the same, indicating that the air is fully saturated with moisture.