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6. Pressure loss
6.1.
Pressure loss calculation
p =
w
2
2
p
[Pa]
presure loss
w
[m.s
-1
]
air flow speed in nominal damper section
[kg.m
-3
]
air density
[-]
coefficient of local pressure loss for the nominal damper section
(see Tab. 7.1.1.)
III. TECHNICAL DATA
6.2.
Determination of pressure loss by using diagram 6.2.1. = 1,2 kg.m
-3
Diagram 6.2.1. Pressure losses for air density =1,2 kg.m
-3
7.1.
Coefficient of local pressure loss (-)
Tab. 7.1.1. Coefficient of local pressure loss
D
100
125
140
150
160
180
200
225
250
280
315
350
355
400
2,736 2,099 1,781 1,527 1,272 0,929 0,636 0,477 0,344 0,237 0,159 0,125 0,116 0,085
7. Coefficient of local pressure loss
