5.1. Property Symbol Description

Try these first

1. 1.

   What does DBT stand for, and what does it measure?

   Hint

   Think about how we measure temperature normally.

2. 2.

   What is the main role of WBT?

   Hint

   Remember how wetness affects temperature perception.

3. 3.

   What does the term DBT refer to?

   • Dry Air Temperature
   • Regular Temperature
   • Absolute Humidity

   Hint

   Think about how we measure temperature normally.

4. 4.

   True or False: WBT helps evaluate the comfort level of air.

   • True
   • False

   Hint

   Consider what humidity does to our comfort.

5. 5.

   Given a room temperature of 30°C and a dew point of 20°C, calculate the relative humidity.

   Hint

   You need to calculate e from DPT and es from DBT.

6. 6.

   Design an air conditioning system for a small office with DBT of 24°C and WBT of 18°C to achieve comfort. What properties must you manage?

   Hint

   Thinking about flow rate and humidity levels will aid in your design.