CONDENSATION

What is the relationship between air temperature and its capacity to hold water vapor?

• No relationship

• Inversely proportional

• Directly proportional

• Random

What is the dew point?

• The temperature at which air is saturated with water vapor

• The temperature at which water freezes

• The temperature at which air is completely dry

• The temperature at which water boils

What happens when there are holes or gaps in the vapor barrier?

• The vapor barrier becomes stronger

• Humid air will bypass the vapor barrier

• The wall becomes waterproof

• The insulation becomes unnecessary

What causes condensation in buildings in Britain during winter?

• Cold dry air

• Warm moist air

• Lack of ventilation

• Excessive heating

How much moisture is produced by breathing (asleep) compared to breathing (awake)?

• Less

• More

• The same

• Twice as much

What is the second type of condensation listed?

• Surface condensation

• Interstitial condensation

• Reverse condensation

• Radiation condensation

Which type of condensation is listed last?

• Surface condensation

• Interstitial condensation

• Reverse condensation

• Radiation condensation

What is a factor that affects the dewpoint of air?

• Insulation thickness

• Wind speed

• Ambient temperature

• Pipe size

Which of the following is NOT a factor influencing the dewpoint of air?

• Ambient temperature

• Ambient relative humidity

• Fluid temperature

• None of the above

What is interstitial condensation?

• Condensation occurring on the surface of walls

• Condensation occurring within the layers of a wall

• Condensation occurring on windows

• Condensation occurring in the attic