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Air duct pressure drop
Friction loss calculation is made in rectangular, round or oval ventilation ducts.
Fill in the form below.
Unit system
:
SI
Imperial
Duct type
:
Rectangle
Circular
Oval
Duct position
:
Horizontal
Vertical
Flow rate
:
m³/h
lt/s
Width/Height (W/H)
:
25
50
75
100
125
150
175
200
225
250
275
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
25
50
75
100
125
150
175
200
225
250
275
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
mm
Sound insulation
:
No
6 mm
10 mm
15 mm
20 mm
25 mm
Fluid Temperature
:
°C
z
1
: Input level
z
2
: Output level
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Air Duct