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Ventilation Components - Minor Pressure Loss

Pressure loss in ventilation system components like dampers, filters, heaters, coolers and more.

The table below indicates pressure drops in some common ventilation components and fittings.

Ventilation Components - Minor Pressure Loss
Component TypePressure Loss (Pa)
Air Velocity (m/s)
2.02.252.52.753.0
Intake damper 5 5 5 5 5
Mixing chamber straight 35 45 55 70 85
90o 40 55 70 85 100
Filter short EU2 70 75 80 90 95
short EU3 100 110 120 135 145
long EU3 70 75 80 80 85
long EU5 115 125 140 150 165
long EU7 140 150 165 175 185
long EU9 160 175 190 210 230
Heater water, size 1 5 5 10 10 10
water, size 2 10 15 15 20 20
water, size 3 20 25 30 30 35
electrical, size 1 10 10 15 15 20
electrical, size 2 15 20 30 35 40
electrical, size 3 35 45 55 70 85
Cooler size 1 20 25 30 35 40
size 2 25 35 40 45 55
size 3 35 45 50 60 70
drop separator 45 50
Humidifier 60% 50 60 75 90 110
90% 75 100 120 160 180
Noise damper 750 mm 5 10 10 15 15
1425 mm 10 15 15 20 25
Rotating heat exchanger big rotor 120 140 160 180 195
little rotor 150 170 195 220 245
Air-fluid-air exchanger lamella 2 mm, size 1 50 60 75 90 105
lamella 2 mm, size 2 75 90 110 130 155
lamella 2 mm, size 3 95 120 145 175 205
lamella 4 mm, size 1 30 35 45 55 65
lamella 4 mm, size 2 45 55 65 80 90
lamella 4 mm, size 3 55 70 85 100 120
drop separator 45 50
Plate exchanger 65 80 105 125 150
with drop separator 200
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