ahu, fans for fresh air system

AHUs are primarily used to regulate, reconditon, and circulate air as part of an HVAC system,
in order to improve the indoor air quality.
It is widely used in data center, air conditioning, heating, and other industries.

AC Fan

Motor: AC
Components: Not integrated
Size: Large and heavy
AHU set-up: Typically a single fan in AHUAir
Flow: Parallel to axis
Works best with: Applications that require non-ducted straight-line flow, high-volume flow

EC Fan

Motor: EC
Known as brushless DC motors
AC input is converted to high DC supply to the motors
Components: Integrated
Size: Compact
AHU set-up: Multiple fans in AHU
AirFlow: Diagonally to axis
Works best with: Duct applications that require high static pressure

Recommendations

AHU Fans Parameters

Related AHU Fans Parameters
Size (mm)	Voltage (V)	Power (W)	Air Flow (m³/h)	Air Pressure (Pa)
250mm	200 ~ 480	0.50 ~ 1.18	1000 ~ 3000	700 ~ 1400
280mm	200 ~ 480	0.50 ~ 1.05	2000 ~ 4800	550 ~ 1150
310mm	380 ~ 480	1.23 ~ 2.95	2800 ~ 6000	800 ~ 2100
355mm	380 ~ 480	1.10 ~ 2.68	3000 ~ 6500	600 ~ 1600
400mm	380 ~ 480	2.50 ~ 3.35	4000 ~ 9000	500 ~ 1550
450mm	380 ~ 480	1.74 ~ 5.25	12000 ~ 14000	800 ~ 1900
500mm	380 ~ 480	3.45 ~ 5.70	5300 ~ 14000	600 ~ 1750
560mm	380 ~ 480	3.30 ~ 5.00	6000 ~ 17000	500 ~ 1300
630mm	380 ~ 480	7.00 ~ 9.78	11000 ~ 23000	600 ~ 1800
710mm	380 ~ 480	7.30 ~ 11.90	14000 ~ 31000	600 ~ 1780
800mm	380 ~ 480	7.90 ~ 11.30	16000 ~ 34000	550 ~ 1500
1000mm	380 ~ 480	6.34	18000 ~ 40000	250 ~ 750

AHU Upgrade

Before(AHU with AC Fan)

After(AHU with EC Fan)

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What is An Air Handling Unit (AHU)?