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452 Chapter 8

Head lots in conical diffusan

1^—<~)T

0 20 40 60 80 100 120 140 160 110

HMd loss in circular miters 1 2 ^
-
^
1.0
, r
. 11
0.8
'
f
K 0.6 K •' .2 (1 or. 6) j
j
-X"N
0.4
c — \ ^ °- 2 ^ ^ /
A Vx^?. •E *•* *^ ^ X
0 10 20 30 40 SO 60 70 80 90
fl.deg.

Contraction

0 0.4 0.8
Orific* 0.2
0.4 0.8

p = small diameter / large diameter, K based on the velocity in smaller pipe,
K based on the velocity in the pipe for the orifice

Figure 8.18 Friction-loss factors for pipe transitions. From Ref. 19 with
permission.

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