7.1. Key Features

Try these first

1. 1.

   What does DBT stand for?

   Hint

   Think about the basic temperature measurement.

2. 2.

   What type of air-conditioning is used in homes?

   Hint

   Consider what is used for human comfort.

3. 3.

   What is the function of a comfort air-conditioning system?

   • To control industrial processes
   • To maintain suitable temperature and humidity for human comfort
   • To produce chilled water

   Hint

   Think about where you might typically see air conditioning at work.

4. 4.

   True or False: Psychrometry deals only with dry air.

   • True
   • False

   Hint

   Consider what happens to humidity when it becomes water vapor.

5. 5.

   Given a specific dry bulb temperature and relative humidity, calculate the dew point temperature using psychrometric principles.

   Hint

   Refer to the psychrometric properties and equations for calculation.

6. 6.

   Propose design modifications to improve an existing air-conditioning system's energy efficiency in a commercial building.

   Hint

   Think about energy savings and system design principles.