2.1.3. Relative Humidity (RH)

Try these first

1. 1.

   Define Relative Humidity.

   Hint

   Think about moisture in the air.

2. 2.

   What does Dry Bulb Temperature measure?

   Hint

   It's the regular air temperature.

3. 3.

   What does Relative Humidity indicate?

   • Current moisture vs. max moisture
   • Only current moisture
   • Only max moisture

   Hint

   Think of how moisture feels in the air.

4. 4.

   True or False: Higher RH makes you feel cooler.

   • True
   • False

   Hint

   How does sweat evaporate on a humid day?

5. 5.

   A room is at 25°C with 80% RH. Calculate the dew point temperature using the formula, considering the saturation point.

   Hint

   Refer to psychrometric charts and related formulas.

6. 6.

   If an HVAC system is designed to maintain RH at 50% during a summer day of 30°C, how will this influence energy use and occupant comfort?

   Hint

   Consider the role of humidity control in thermal comfort.