Air Handling Unit and Cooling Demand

Question 1

List at least seven components in an air-handling unit.

Answer 1

Fans, filters, heating coils, cooling coils, humidifier, dehumidifier and dampers.

Question 2

Is the statement true or false?
o When air passes through a heating coil the moist content of the air is always
constant.
o When air passes through a cooling coil the moist content of the air is always
constant.
o When outdoor air passes through a rotating heat exchanger the moist content
of the air is always constant.

Answer 2

The moisture content remains constant when air passes through a heating coil. TRUE
The moisture content typically decreases when air passes through a cooling coil. FALSE
The moisture content can change when air passes through a rotating heat exchanger. FALSE