The temperature at which moisture will start to condense from the air is called

The temperature at which moisture will start to condense from the air is called

• A. Boiling point
• B. Dew point temperature
• C. Saturation temperature
• D. Condensation point

Answer: (B)

Dew point is the temperature at which air becomes saturated with water vapor and condensation begins. As air cools, its capacity to hold moisture decreases; when it reaches the dew point, the remaining vapor condenses into liquid on surfaces or in the air. This concept is essential in refrigeration and HVAC because it helps predict when surfaces like coils or pipes will sweat or frost. Boiling point is the temperature at which a liquid boils and turns to vapor, which is about the liquid itself, not about moisture condensing from ambient air. Saturation temperature is a related thermodynamic term for the temperature at which a vapor is in equilibrium with its liquid at a given pressure, but the everyday way to describe when condensation starts from air is the dew point. Condensation point is less commonly used; the standard term is dew point.

Dew point is the temperature at which air becomes saturated with water vapor and condensation begins. As air cools, its capacity to hold moisture decreases; when it reaches the dew point, the remaining vapor condenses into liquid on surfaces or in the air. This concept is essential in refrigeration and HVAC because it helps predict when surfaces like coils or pipes will sweat or frost.

Boiling point is the temperature at which a liquid boils and turns to vapor, which is about the liquid itself, not about moisture condensing from ambient air. Saturation temperature is a related thermodynamic term for the temperature at which a vapor is in equilibrium with its liquid at a given pressure, but the everyday way to describe when condensation starts from air is the dew point. Condensation point is less commonly used; the standard term is dew point.