Ventilation Components - Minor Pressure Loss

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

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

Pressure Drop (Pa) Load Calculator!
Component Type		Air Velocity (m/s) Load Calculator!
Component Type		2.0	2.25	2.5	2.75	3.0
Intake damper		5	5	5	5	5
Mixing chamber	straight	35	45	55	70	85
Mixing chamber	90^o	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
Humidifier	90%	75	100	120	160	180
Noise damper	750 mm	5	10	10	15	15
Noise damper	1425 mm	10	15	15	20	25
Rotating heat exchanger	big rotor	120	140	160	180	195
Rotating heat exchanger	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

Air Duct Components - Minor Dynamic Loss Coefficients - Minor loss (pressure or head loss) coefficients for air duct components.
Ventilation Dampers - Classification - Dampers in ventilation systems may be classified through function, construction or leakage class.
Ventilation Filters - Classification of air filters used in ventilation systems.