User's Manual

Design
P/N 81-CO2MAN-001 3-45 September 2013
Where:
= Design flow rate per unit volume, lb./min-
ft.
3
(kg/min-m
3
)
= Open area of assumed enclosure "walls",
ft.
2
(m
2
)
= Total area of assumed enclosure "walls",
ft.
2
(m
2
)
Figure 3-4. Partial Enclosure Flow Rate Reduction*
Determine the minimum rate of discharge for the hazard by multiplying the design flow rate
by the assumed enclosure.
(Equation 30)
Where:
= Minimum discharge rate, lb./min (kg/min)
= Design flow rate per unit volume from Equation (29), lb./min-
ft.
3
(kg/min-m
3
)
= Volume of assumed enclosure,
ft.
3
(m
3
)
q
V
A
O
A
W
q
min
q
v
V=
q
min
q
V
V