Honeywell Design and Application - Example 4: Ventilation Review Questions

Section 1 - Ventilation
Honeywell Economizers 63-8594-02 18
Example 4: Ventilation Review Questions
1. Specifications:
Office space - 200,000 ft
2
.
Air handler capacity - 30,000 cfm
(849 m
3
/min)
People in area - 350
2. Ventilation required:
=350 x 5 cfm per person + 0.06 cfm/ft
2
x
200,000 ft
2
=1750 cfm + 12,000 cfm
=13750 cfm
3. Ventilation percentage:
13750 cfm (389.4 m
3
/min)/30,000 cfm
(849 m
3
/min)
4. Measure the return air temperature:
68°F (20°C)
5. Measure the outside air temperature:
21°F (-6°C)
This is the air handler for an office building
with 350 people maximum occupancy.
Complete the required steps in the procedure
to adjust the controls for the correct volume of
ventilation.
EXHAUST
AIR
M23920
DAMPER
RETURN
AIR
68˚F (20 C)
OUTSIDE
A
IR
21˚F (-6 C)
30,000 CFM
(849 M
3
MIN.)