FDFB-22

General information
Equipment type:	Forced draft fan
Name:	FDFB-22
English name:	VDN-22
Notes:	Backward curved blades

Description for FDFB-22
Single inlet centrifugal FD Fans are used for air delivery into combustion chambers of boilers with the capacity of 2.5- 950 t/h operating with balanced draft (secondary blast). It is allowed to use these fans in processing systems to handle air with the temperature not more than 70 °C. Single inlet centrifugal FD Fans can have right-hand or left-hand rotational direction. The right-hand rotation is in a clockwise order and it should be defined at electric motor side. The main units of Single inlet centrifugal FD Fan are: running wheel, running gear, scroll casing, inlet bell and axial guide vanes. The blades of impeller are backward curved.

Description for FDFB-22

Single inlet centrifugal FD Fans are used for air delivery into combustion chambers of boilers with the capacity of 2.5- 950 t/h operating with balanced draft (secondary blast). It is allowed to use these fans in processing systems to handle air with the temperature not more than 70 °C. Single inlet centrifugal FD Fans can have right-hand or left-hand rotational direction. The right-hand rotation is in a clockwise order and it should be defined at electric motor side. The main units of Single inlet centrifugal FD Fan are: running wheel, running gear, scroll casing, inlet bell and axial guide vanes. The blades of impeller are backward curved.

Aerodynamic characteristics
Capacity:	210	ths. m³/h
Total pressure:	3330	Pa
Temperature:	100	°C
Efficiency:	87	%

Dimensions*
Length (L):	3890	mm
Width (W):	5190	mm
Height (H):	4400	mm
Weight:	7 060	kg

Electric motor
Actuator power^?:	315	kW
Rotation frequency:	750	rpm
Moment of inertia:	825	kg*m²

Overall drawing FDFB-22 ^*
* Dimensions may vary depending on the electric motor model, customer requirements and design constraints.

Railway delivery options
Platforms:	2
Wagons:	0
Transporters:	0

Additional components
Actuator:	630	Nm

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