1.5.2. Central

Try these first

1. 1.

   Name one type of comfort air conditioning system.

   Hint

   Think of systems used in homes.

2. 2.

   What is relative humidity?

   Hint

   Think of moisture in the air.

3. 3.

   Which of the following is a type of comfort air conditioning system?

   • Industrial system
   • Window unit
   • Central chilled water system

   Hint

   Think of systems installed in specific rooms.

4. 4.

   True or False? The combination of temperature and humidity determines thermal comfort.

   • True
   • False

   Hint

   Consider what it feels like when it's hot or humid.

5. 5.

   An industrial air conditioner supplies chilled water at 7°C. If the flow rate is 10 L/s, calculate the cooling capacity in kW if the specific heat of water is 4.18 kJ/kg°C and the density of water is approximately 1000 kg/m³.

   Hint

   Convert liters to kilograms using density before calculating.

6. 6.

   Discuss how improper psychometric analysis can lead to inadequate air-conditioning design.

   Hint

   Consider the balance of moisture and temperature during operation.