III. TECHNICAL DATA
8. Pressure loss
8.1.
Pressure loss calculation
p =
p
w
8.2.
Determination of pressure loss by using diagram 8.2.1.
Diagram 8.2.1. Pressure losses for air density
9. Coefficient of local pressure loss
Coefficient of local pressure loss
9.1.
Tab. 9.1.1. Coefficient of local pressure loss
D
100
125
140
2,736 2,099 1,781 1,527
w
2
2
[Pa]
presure loss
[m.s ]
air flow speed in nominal damper section
-1
[kg.m ]
air density
-3
[-]
coefficient of local pressure loss for the nominal damper section
(see Tab. 8.2.1.)
=1,2 kg.m
(-)
150
160
180
200
1,272
0,929
0,636
= 1,2 kg.m
-3
225
250
280
0,477 0,344
0,237
21
TPM 083/12
-3
315
350
355
400
0,159 0,125 0,116 0,085