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Centrifugal Fan
A centrifugal fan is a mechanical device used for the movement of air or other gases in incoming fluid direction. They use the kinetic energy of the impeller to increase the volume of the air and with the rotation of the impeller fan increase the speed and volume of an air
| Direct Drive type | Direct connected motor |
| Belt drive type | Motor connected through Belt drive |
| Fan type | centrifugal |
| Impeller type | Radial tip type |
|
Model no. (r-1) |
Volume flow (cfm) |
Static pressure (mm of wc) |
Fan Speed (rpm) |
Motor Rating (H.P) |
| 0005 | 500 | 51 | 1440 | 0.5 |
| 0015 | 2000 | 51 | 1440 | 1 |
| 0025 | 4000 | 51 | 1440 | 2 |
| 0030 | 3750 | 51 | 1440 | 3 |
| 0035 | 8000 | 51 | 1440 | 5 |
| 0040 | 11500 | 51 | 1440 | 7.5 |
| 0085 | 10000 | 76 | 1440 | 10 |
| 0090 | 13000 | 76 | 1440 | 12.5 |
| 0150 | 12500 | 76 | 1440 | 15 |
| 0150 | 15000 | 102 | 1440 | 20 |
| 0250 | 11500 | 203 | 1440 | 25 |
| 0255 | 13000 | 203 | 1440 | 30 |
- During construction projects, shot blasting is also used to clean the outer walls, roads, and floors.
- Shot blasting is often used to clean tanks and pipes underwater before coating or recoating them to stop corrosion.
- ShipYard and ShipBuilding.
- aircraft maintenance and aerospace.
- Foundry for iron, steel, and other metals.
- The casting of aluminum.
- Forgings.
- Rail.
- Foundries.
- fabrication of steel.
- Car and bus murals.
- Wheel cleaning for alloys.
Centrifugal fans are very efficient and versatile piece of air moving equipment. Centrifugal fans contain centrifugal fan blower with a centrifugal fan impeller and scroll housing and that housing accelerate the air and changes the direction of airflow two times, a full 90 degree before leaving the house. They are reliable and made in a way so that they can operate in a variety of environments and applications.
Centrifugal fan blade:
1. Radial:
The pressure of these fans is high and medium airflow. These fans are used when there is gas or moisture in the air.
2. Forward curve:
The pressure is medium and airflow is high and they are used in the cleaning of air, ventilation, and exhaust applications.
3. Backward curve:
These fans have high pressure, high efficiency, and high flow, and when power is reduced the flow rate will increase.
4. Airfoil:
These fans are used for cleaning the air and the efficiency of these fans are high.
Centrifugal fan theory:
To choose the correct fan we should have complete knowledge about the pressure requirement. When we have a more complicated and lengthy duct system then its power requirements are also high. Usually, we have two drive system in centrifugal fan which are:
Direct Drive: direct drive system mainly used for smaller blowers and also offer lower cost with reduced maintenance and greater reliability.
Belt Drive: belt drive has uses in the application of large blowers when they are equipped with a variable frequency drive.
Centrifugal fan efficiency:
Centrifugal fan efficiency is the ratio between power transferred to airflow and the power used by the fan.
Motor efficiency used:
- Motor 1.337 hp.
- Motor 13.41 hp.
- Motor 134.10 hp.
Centrifugal fan impeller wheels
Mainly we have 8 types of impeller wheels which are:
1) Shrouded radial wheel
2) Open radial blade
3) Open paddle wheel
4) Backward inclined
5) Airfoil blade
6) Forward curved multi-vane
7) Backward curved radial
Centrifugal fan application:
- Used in Dust Collectors
- In Paint Booths
- In air conditioning
- For high pressure applications
Centrifugal fan advantages:
- Energy efficient
- Durable
- Can restrict overloading
- Versatility is high
- Maintenance is easy
Centrifugal vs. Axial fan:
| Centrifugal fan | Axial fan |
| Flow of air is radially | Flow of air in the axial direction |
| Airflow is directed through a system of ducts or tubes | Create a large volume of airflow |
| Power input is high | Low power input |
| High pressure airflow | Low pressure airflow |
| Flow rate is low | High flow rate |
About our company:
Blast Rooms are the manufacturer of all kind of Sand Blasting machine and Blasting cabinet. we also manufacture different blasting machine-like Shot Blasting Machine and Grit Blasting Machine. Rather than blasting machines we also manufacture coating equipment such as Thermal Spray Gun on-demand. we also supply all types of Abrasive Media at the best price and with great quality assurance.