1.3.2. Central Systems

Try these first

1. 1.

   What are the two main types of air-conditioning systems based on purpose?

   Hint

   Think about which systems are for people versus processes.

2. 2.

   Define what psychrometry studies.

   Hint

   Focus on the relationship between air and water in terms of temperature and humidity.

3. 3.

   What type of air-conditioning system is primarily designed for human comfort?

   • Industrial
   • Comfort
   • Central

   Hint

   Think about which systems are aimed at people’s needs.

4. 4.

   True or False: Central air-conditioning systems utilize self-contained units.

   • True
   • False

   Hint

   Reflect on the terminology we used for different system types.

5. 5.

   You are designing a central air-conditioning system for a large theater. The theater has 200 seats, with an average occupant heat gain of 250 BTU/hr. Calculate the total heat gain from occupants alone.

   Hint

   Focus on using the occupant load in your calculations.

6. 6.

   A central air-conditioning system needs to maintain a relative humidity of 50% in a space. If the current humidity is 70%, outline the changes needed to achieve this humidity level.

   Hint

   Consider the principles of cooling with dehumidification.