Chapter 2. Installing the Pipe Nozzles
40
Model T17 Installation Guide
2.4.2 Selecting and Marking the First Nozzle Location - MR2 Mid-Radius (cont.)
3.
Refer to
below, and calculate the location for the center of the first nozzle as follows:
Note:
See
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
for a typical example calculation.
Figure 50: Locating the MR2 Nozzles on the Pipe
Y
0
D 2W
–
2
------------------- (Chord Location)
×
=
where,
Chord Location
1
2
--- (for mid-radius installations)
=
X
0
D
2
----
2
Y
0
(
)
2
–
=
AS
2
--------
D
2
----
β
×
=
where,
β
(radian)
X
0
Y
0
-------
atan
=
S
2
----
X
o
=
AS
2
--------
D
2
---- B
×
=
D
2W
–
2
-------------------
D
2
----
D
2W
–
2
-------------------
CHORD
LOC
×
W
B
X
o
,Y
o
(
)
2nd Nozzle
1st
Nozzle
Downstream
End View
