Tyco Fire Suppression & Building Products ANSUL AQUASONIC, Руководство по проектированию, установке, заправке и обслуживанию

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SECTION IV
3-1-2010 Page 4-6
6d – Size Piping and Calculate Pipe Pressure Loss
(PPL) in Branch Line D
Linear length D1 and D2 + equivalent lengths of all fittings
in each pipe line x pressure loss (see Table 2) = Pipe
Pressure Loss (PPL).
Example:
1/2 in. Schedule 40 piping:
Length D1, 17 ft (5.18 m) + D2, 2.92 ft (0.89 m) = 19.92 ft
(6.07 m)
Equivalent length of 1/2 in. elbow = 1 ft (0.30m) (see
Table 1)
One elbow in Branch Line G = 1 x 1 ft (0.30m) (equivalent
length per elbow) = 1 ft (0.30m)
19.92 ft (6.07 m) + 1 ft (0.30m) = 20.92 ft (6.38 m) total
equivalent feet of pipe
Select the correct pressure from Table 2 for the number of
atomizers flowing through this pipe section. Since there is
one atomizer, the pressure loss factor would be 0.03023
psi/ft (0.00683 bar/m) (see Table 2).
Pressure loss for Branch Line D = 20.92 ft (6.376 m) of
1/2 in. pipe x 0.03023 psi/ft (0.00683 bar/m) = 0.63 psi
(0.043 bar).
6e – Size Piping and Calculate Pipe Pressure Loss
(PPL) in Branch Line E
Linear length E1 and E2 + equivalent lengths of all fittings
in each pipe line x pressure loss (see Table 2) = Pipe
Pressure Loss (PPL).
Example:
1/2 in. Schedule 40 piping:
Length E1, 11.67 ft (3.557 m) + E2, 6.59 ft (2.009) =
18.26 ft (5.566 m)
Equivalent length of 1/2 in. elbow = 1 ft (0.30m) (see
Table 1)
One elbow in Branch Line B = 1 x 1 ft (0.30m) (equivalent
length per elbow) = 1 ft (0.30m)
Equivalent length of 1/2 in. tee = 3 ft (0.91 m) (see Table
1)
One (1) tee in Branch Line B = 1 x 3 ft (0.91 m) (equiva-
lent length per side tee) = 3 ft (0.91 m)
18.26 ft (5.566 m) + 1 ft (0.30m) + 3 ft (0.91 m) = 22.26 ft
(6.785 m) total equivalent length of pipe.
Select the correct pressure from Table 2 for the number of
atomizers flowing through this pipe section. Since there
are two atomizers, the pressure loss factor would be
0.10912 psi/ft (0.02467 bar/m) (see Table 2).
Pressure loss for Branch Line E = 22.26 ft (6.785 m) of
1/2 in. pipe x 0.10912 psi/ft (0.02467 bar/m) = 2.43 psi
(0.168 bar).
6f – Size Piping and Calculate Pipe Pressure Loss
(PPL) in Branch Line F
Linear length F1 + equivalent lengths of all fittings in each
pipe line x pressure loss (see Table 2) = Pipe Pressure
Loss (PPL).
Example:
1/2 in. Schedule 40 piping:
Length F1, 2.92 ft (0.89 m) =2.92 ft (0.89 m)
Equivalent length of 1/2 in. side tee = 3 ft (0.91 m) (see
Table 1)
One (1) tee in Branch Line F = 1 x 3 ft (0.91 m) (equiva-
lent length per elbow) = 3 ft (0.91 m)
2.92 ft (0.89 m) + 3 ft (0.91 m) = 5.92 ft (1.80 m) total
equivalent feet of pipe.
Select the correct pressure from Table 2 for the number of
atomizers flowing through this pipe section. Since there is
one atomizer, the pressure loss factor would be 0.03023
psi/ft (0.00683 bar/m) (see Table 2).
Pressure loss for Branch Line F = 5.92 ft (1.80 m) of 1/2
in. pipe x 0.03023 psi/ft (0.00683 bar/m) = 0.18 psi (0.012
bar)
6g – Size Piping and Calculate Pipe Pressure Loss
(PPL) in Branch Line G
Linear length G1 and G2 + equivalent lengths of all fittings
in each pipe line x pressure loss (see Table 2) = Pipe
Pressure Loss (PPL).
Example:
1/2 in. Schedule 40 piping:
Length G1, 17 ft (5.18 m) + G2, 2.92 ft (0.89 m) = 19.92 ft
(6.07 m)
Equivalent length of 1/2 in. elbow = 1 ft (0.30m) (see
Table 1)
One elbow in Branch Line G = 1 x 1 ft (0.30m) (equivalent
length per elbow) = 1 ft (0.30m)
19.92 ft (6.07 m) + 1 ft (0.30m) = 20.92 ft (6.38 m) total
equivalent feet of pipe
Select the correct pressure from Table 2 for the number of
atomizers flowing through this pipe section. Since there is
one atomizer, the pressure loss factor would be 0.03023
psi/ft (0.00683 bar/m) (see Table 2).
Pressure loss for Branch Line G = 20.92 ft (6.376 m) of
1/2 in. pipe x 0.03023 psi/ft (0.00683 bar/m) = 0.63 psi
(0.043 bar).
Design