User's Manual

Design
September 2013 3-28 P/N 81-CO2MAN-001
(Equation 17)
Where:
= Number of nozzle columns
= Width of protected area, ft. (m)
= Side of square from Table 3-4 or Table 3-5, ft. (m)
(Equation 18)
Where:
= Number of nozzle rows
= Length of protected area, ft. (m)
= Side of square from Table 3-4 or Table 3-5, ft. (m)
(Equation 19)
Where:
= Quantity of nozzles
= from Equation (17) rounded up to the next whole number
= from Equation (18) rounded up to the next whole number
The total discharge rate for overhead nozzle protection may be calculated using Equation 20.
(Equation 20)
Where:
= Total discharge rate for overhead nozzle protection, lb./min (kg/min)
= Single nozzle discharge rate from Table 3-4 or Table 3-5, lb./min
(kg/min)
= Quantity of nozzles from Equation (19)
N
w
ws=
N
w
w
s
N
l
ls=
N
l
l
s
NN
w
N
l
=
N
N
w
N
w
N
l
N
l
q
OH
q
n
N=
q
OH
q
n
N