The SDF Tunnel Ventilation Fan is a high-efficiency axial flow fan designed for forced ventilation and local ventilation in road tunnels, railway tunnels, underground construction projects, mining roadways, and other confined underground spaces.
The fan is commonly connected to a flexible ventilation duct to deliver fresh air to tunnel headings or working areas, while also supporting the removal of contaminated air, dust, heat, and construction fumes.
EMS provides SDF Tunnel Ventilation Fans in different diameters, airflow capacities, pressure levels, motor powers, and configurations according to tunnel length, ventilation distance, duct dimensions, system resistance, and project requirements.
SDF Tunnel Ventilation Fans are suitable for:
Tunnel Construction Ventilation
Road Tunnel Ventilation
Railway Tunnel Ventilation
Underground Construction
Mining Tunnel Ventilation
Mine Heading Ventilation
Tunnel Excavation
Underground Roadway Ventilation
Tunnel Heading Ventilation
Long-Distance Duct Ventilation
Underground Engineering Ventilation
Local Tunnel Ventilation
Construction Site Air Exchange
| Parameter | Typical Range |
|---|---|
| Product Type | Tunnel Ventilation Fan |
| Fan Diameter | 300–1600 mm |
| Airflow | 3,000–150,000 m³/h |
| Pressure | 300–8,000 Pa |
| Motor Power | 2.2–160 kW |
| Motor Speed | 1,450–2,980 rpm |
| Drive Type | Direct Drive |
| Impeller Type | Axial Flow |
| Motor | Industrial / Mining Motor |
| Casing Material | Carbon Steel / Customized |
| Blade Material | Steel / Aluminum Alloy / Customized |
| Ventilation Mode | Forced / Exhaust |
| Duct Connection | Flexible Ventilation Duct |
| Installation | Horizontal / Customized |
| Frequency | 50 / 60 Hz |
| Duty | Continuous Operation |
The above values are typical engineering reference ranges and are not fixed specifications for every SDF model. Final airflow, pressure, motor power, fan diameter, and configuration should be selected according to the actual tunnel ventilation system.
The SDF Tunnel Ventilation Fan uses an axial-flow impeller driven by an electric motor.
As the impeller rotates, air is accelerated through the fan in the axial direction and delivered into the connected ventilation duct. The duct then transports fresh air to the tunnel heading or working face.
Typical forced ventilation arrangement:
Fresh Air → SDF Tunnel Fan → Flexible Ventilation Duct → Tunnel Heading → Working Face
Depending on the ventilation system design, the fan can also be configured for exhaust applications to remove contaminated air, dust, heat, and construction fumes.
The axial-flow design provides high-volume airflow for tunnel and underground ventilation applications.
The fan can be connected to flexible ventilation ducts, making it suitable for tunnel excavation and long-distance local ventilation.
Different pressure configurations can be selected according to duct length, leakage, bends, and overall system resistance.
The compact axial fan structure is suitable for underground construction sites where installation space is limited.
The fan can be equipped with industrial-grade motors, bearings, and components suitable for continuous-duty ventilation applications.
EMS can customize fan diameter, airflow, pressure, motor power, voltage, frequency, casing material, blade material, and duct connection according to project requirements.
SDF Tunnel Ventilation Fans can be installed at:
Tunnel Portals
Tunnel Headings
Tunnel Construction Areas
Underground Roadways
Mine Heading Faces
Underground Engineering Sites
Ventilation Stations
Long-Distance Duct Ventilation Systems
Proper SDF Tunnel Ventilation Fan selection should consider the complete ventilation system rather than airflow alone.
Recommended selection information includes:
Tunnel Length
Ventilation Distance
Tunnel Cross-Section
Required Airflow
Required Pressure
Ventilation Duct Diameter
Duct Length
Duct Leakage
Number of Duct Bends
Fan Installation Location
Motor Voltage
Power Frequency
Ambient Temperature
Dust and Gas Conditions
Required Operating Hours
For long-distance duct ventilation, duct diameter, duct length, leakage rate, bends, and system resistance can significantly affect the required fan pressure.
| Item | SDF Tunnel Ventilation Fan | SDS Tunnel Jet Fan |
|---|---|---|
| Main Function | Ducted Tunnel Ventilation | Longitudinal Tunnel Ventilation |
| Duct Connection | Usually Yes | Usually No |
| Airflow | Through Flexible Duct | Direct Jet Airflow |
| Typical Installation | Tunnel / Heading Area | Tunnel Ceiling |
| Main Application | Tunnel Construction | Permanent Tunnel Ventilation |
| Ventilation Method | Forced / Local Ventilation | Longitudinal Ventilation |
| Main Search Term | Tunnel Ventilation Fan | Tunnel Jet Fan |
SDF and SDS products therefore serve different ventilation configurations and should normally be presented as separate product categories on an industrial fan website.
EMS provides complete technical support for SDF Tunnel Ventilation Fan projects, including:
Fan Selection
Airflow and Pressure Calculation
Duct System Matching
Motor Selection
Fan Performance Customization
Duct Connection Design
Electrical Configuration
VFD / Soft Starter Options
Installation Guidance
Technical Documentation
Export Packaging
Overseas Project Technical Support