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I.D. & F.D. Fans
I.D. (Induced Draft) and F.D. (Forced Draft) Fans are essential components of industrial boiler and furnace systems. They work together to maintain balanced airflow by supplying fresh combustion air and removing flue gases efficiently. At Air Movement & Control System Pvt. Ltd., we manufacture robust and energy-efficient I.D. & F.D. Fans engineered for reliable operation in power plants, cement industries, steel plants, chemical industries, and other heavy-duty applications.
I.D. (Induced Draft) Fans
An Induced Draft (I.D.) Fan creates negative pressure (vacuum) inside a boiler or furnace by drawing flue gases through the system. This ensures efficient combustion while safely removing exhaust gases and maintaining balanced furnace pressure.
Key Components
| Component | Description |
|---|---|
| Impeller | Backward-curved or radial blades for high pressure rise |
| Casing | Spiral (scroll) housing; may be insulated for heat control |
| Inlet Guide Vanes | Control airflow and improve efficiency |
| Drive System | Belt-driven or direct-coupled motors; VFDs for speed control |
| Bearings | Grease or oil-lubricated bearings for high-speed operation |
| Silencer (optional) | Reduces noise generated by air intake |
Design Parameters
| Parameter | Typical Range / Notes |
|---|---|
| Flow rate (Q) | 5,000 - 150,000+ m³/h |
| Static pressure (ΔP) | 500 - 1000 Pa |
| Air temperature | Ambient to 120°C (usually preheated via air preheater) |
| Efficiency | 75% - 85% |
| Fan type | Centrifugal (most common), axial for high-volume low-pressure systems |
| Material | Mild steel or stainless steel (for corrosion resistance) |
Key Features
- Creates Negative Pressure
- Efficient Flue Gas Removal
- Handles High Temperature Gases
- Heavy-Duty Construction
- Reliable Continuous Operation
Applications
- Power Plants
- Cement Plants
- Steel Industries
- Industrial Boilers
- Furnace Systems
F.D. (Forced Draft) Fans
A Forced Draft (F.D.) Fan supplies pressurized fresh air into the combustion chamber. It provides the oxygen required for efficient fuel combustion while maintaining positive pressure inside the boiler or furnace.
Key Components
| Component | Description |
|---|---|
| Impeller | Backward-curved or radial blades for high pressure rise |
| Casing | Spiral (scroll) housing; may be insulated for heat control |
| Inlet Guide Vanes | Control airflow and improve efficiency |
| Drive System | Belt-driven or direct-coupled motors; VFDs for speed control |
| Bearings | Grease or oil-lubricated bearings for high-speed operation |
| Silencer (optional) | Reduces noise generated by air intake |
Design Parameters
| Parameter | Typical Range / Notes |
|---|---|
| Flow rate (Q) | 5,000 - 150,000+ m³/h |
| Static pressure (ΔP) | 500 - 1000 Pa |
| Air temperature | Ambient to 120°C (usually preheated via air preheater) |
| Efficiency | 75% - 85% |
| Fan type | Centrifugal (most common), axial for high-volume low-pressure systems |
| Material | Mild steel or stainless steel (for corrosion resistance) |
Key Features
- Supplies Pressurized Combustion Air
- Improves Combustion Efficiency
- High Airflow Performance
- Energy Efficient Design
- Low Maintenance
Applications
- Thermal Power Plants
- Industrial Boilers
- Sugar Mills
- Chemical Plants
- Process Industries
Product Benefits
Improves Boiler Efficiency
Maintains Balanced Pressure
Ensures Safe Combustion
Reduces Fuel Consumption
Reliable High-Temp Performance
Low Maintenance Requirements
Durable Industrial Design