The Role of Jet Fans in Tunnel Ventilation
In modern underground construction, Longitudinal Tunnel Ventilation relies on powerful jet fans suspended from the tunnel ceiling. These fans generate high-velocity air streams that push vehicular exhaust gases, dust, and toxic fumes out of the tunnel portals.
In the event of a tunnel emergency or fire, Hnding ZF Tunnel Fans act as crucial life-safety systems-controlling smoke movement, maintaining clear evacuation paths for passengers, and providing safe access for emergency responders.
Key Features & Advantages of Hnding ZF Tunnel Fans
1. Superior Thrust Performance
Designed with advanced fluid dynamics (CFD modeling), our impellers produce maximum effective thrust (N) with optimal energy efficiency, ensuring long-distance air transport through long tunnels.
2. High-Temperature & Smoke Extraction Capability
Built to comply with international fire safety standards (e.g., 300^C/ 2 hours or 400^C / 2 hours certified options), enabling continuous operation under extreme fire emergency conditions.
3. Reversible Airflow (Bi-Directional Operation)
Equipped with symmetrical blade profiles, Hnding ZF tunnel fans can achieve up to 100% fully reversible thrust, allowing operators to reverse airflow direction instantly based on traffic flow or wind direction inside the tunnel.
4. Heavy-Duty Anti-Corrosion & Sound Attenuation
Corrosion Protection: Hot-dip galvanized steel housing or stainless steel construction designed to withstand moisture, vehicle emissions, and harsh underground conditions.
Integrated Silencers: High-grade sound-absorbing silencers fitted on both inlet and outlet ends to significantly reduce operational noise in public spaces.
Technical Specifications
| Parameter | Specification / Options |
| Brand | Hnding ZF |
| Product Type | Heavy-Duty Tunnel Jet Fan / Axial Tunnel Fan |
| Impeller Diameter | 630 mm – 1600 mm (Customizable) |
| Thrust Range | Up to $1500\text{ N}$+ per unit |
| Casing Material | Hot-Dip Galvanized Steel / Stainless Steel (304/316) |
| Airflow Mode | Unidirectional / 100% Reversible (Bi-directional) |
| Fire Rating | Standard / 250^C, 300^C, 400^C for 2 hours |
| Motor Protection Class | IP55 / IP65, Insulation Class H / F |
Primary Applications
Highway Tunnels: Vehicle exhaust dilution (CO, NO_x, particulate matter) and emergency smoke control.
Railway & Metro Tunnels: Underground station ventilation, trackway ventilation, and emergency pressure balancing.
Underground Utility Corridors: Continuous air exchange and moisture extraction in deep mining or urban utility tunnels.
Underground Parking Structures: Induction jet fan systems for large subterranean spaces.
Why Choose Hnding ZF for Your Tunnel Project?
As an experienced manufacturer of industrial and civil ventilation systems, Hnding ZF provides end-to-end support for infrastructure developers and contractors:
Strict Quality & Testing: Every unit undergoes dynamic balance testing, vibration checks, and thrust performance validation.
Custom Project Engineering: We customize fan diameters, silencer lengths, and mounting brackets according to your civil engineering requirements.
Global Supply Chain Support: Direct factory manufacturing with competitive lead times and international shipping experience.
Need Technical Specifications or a Quote for Your Infrastructure Project?
Contact our engineering team today to get full product catalogs, CAD drawings, and custom project quotes!
