Referring to the illustrated psychrometric chart, under what conditions are the dry- bulb, wet-bulb, and dew point temperatures for air all equal in value? GS-RA-22

Illustration GS-RA-22: the U.S. Coast Guard has not released this illustration.

Question

Referring to the illustrated psychrometric chart, under what conditions are the dry- bulb, wet-bulb, and dew point temperatures for air all equal in value? GS-RA-22

Illustration GS-RA-22: the U.S. Coast Guard has not released this illustration.

Accepted Answer

Option C: When the air is completed saturated with moisture and the relative humidity is 100%.. Dry-bulb, wet-bulb, and dew point temperatures converge to the exact same value only when air is fully saturated with water vapor. At 100% relative humidity, evaporation ceases, and moisture is at its condensation point matching the ambient temperature.