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Chapter 2. Installing the Pipe Nozzles
2.3.2 Selecting and Marking the First Nozzle Location - MR1 Mid-Radius (cont.)
3. Refer to Figure 29 below, and calculate the location for the center of the first nozzle as follows:
D 2W
–
------------------ -
×
Y
=
0
2
Note: See Table 3 on page 23 for tabulated AS/2 values calculated from the above equation for common pipe sizes.
Note: To clarify the use of the above equations, see the bottom of page 26 for a typical example calculation.
2nd Nozzle
D 2W
–
------------------ -
×
2
Downstream
End View
22
(Chord Location)
D
AS
------- -
--- -
×
β
=
2
2
W
CHORD
LOC
Figure 29: Locating the MR1 Nozzles on the Pipe
where,
Chord Location
2
D
2
--- -
(
)
X
Y
=
–
0
0
2
β (radian)
where,
D
--- -
2
D 2W
–
B
------------------ -
2
1
-- - (for mid-radius installations)
=
2
X
0
atan
------ -
=
Y
0
S
--- -
=
X
o
2
AS
D
--- -
------- -
×
B
=
2
2
Model T17 Installation Guide
1st
Nozzle
(
)
X
,Y
o
o
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