Product description
1. Product Name
Main Product Name
Tunnel Ventilation Jet Fan
SEO Recommended Product Names
Tunnel Jet Fan
Tunnel Ventilation Jet Fan
SDS Tunnel Jet Fan
Highway Tunnel Jet Fan
Railway Tunnel Ventilation Fan
Metro Tunnel Jet Fan
Reversible Tunnel Jet Fan
Tunnel Smoke Extraction Fan
2. Product Overview
Tunnel Ventilation Jet Fan
The Tunnel Ventilation Jet Fan is a high-efficiency axial flow ventilation fan specially designed for tunnel longitudinal ventilation systems.
The fan generates high velocity airflow through the nozzle effect, producing thrust force to drive air movement inside the tunnel.
It is widely used in:
Highway tunnels
Railway tunnels
Metro tunnels
Underground transportation tunnels
Hydropower tunnels
Underground engineering projects
Main functions:
Fresh air circulation
Vehicle exhaust removal
Carbon monoxide control
Tunnel air quality improvement
Emergency smoke extraction
Tunnel jet fans are normally suspended from the tunnel ceiling or installed on tunnel walls, using the tunnel itself as the airflow passage instead of traditional large ventilation ducts.
3. Working Principle
Longitudinal Jet Ventilation
The operating process:
High Speed Jet Airflow
↓
Generate Thrust Force
↓
Drive Tunnel Air Movement
↓
Remove Exhaust Gas
↓
Maintain Safe Tunnel Environment
The high-speed air discharged from the jet fan transfers momentum to surrounding tunnel air, creating longitudinal airflow throughout the tunnel.
4. Main Applications
Highway Tunnel Jet Fan
Road Tunnel Ventilation System
Applications:
Expressway tunnels
Mountain tunnels
Urban road tunnels
Long-distance highway tunnels
Functions:
Remove vehicle emissions
Control CO concentration
Improve air circulation
Support emergency smoke control
SEO Keywords:
Highway Tunnel Jet Fan
Road Tunnel Ventilation Fan
Railway Tunnel Ventilation Jet Fan
Applications:
High-speed railway tunnels
Underground railway systems
Rail transportation tunnels
Functions:
Tunnel air exchange
Pressure management
Emergency ventilation
SEO Keywords:
Railway Tunnel Jet Fan
Railway Tunnel Ventilation System
Metro Tunnel Ventilation Fan
Applications:
Subway tunnels
Metro stations
Underground rail systems
Functions:
Passenger ventilation
Heat removal
Fire smoke extraction
SEO Keywords:
Metro Tunnel Ventilation Fan
Subway Tunnel Jet Fan
5. Product Types
Single Direction Tunnel Jet Fan
Features
Fixed airflow direction
High efficiency operation
Simple structure
Easy maintenance
Applications:
Standard tunnel ventilation systems
Reversible Tunnel Jet Fan
Features
Forward and reverse operation
Bidirectional airflow
Emergency ventilation capability
Applications:
Long tunnels
Complex ventilation systems
Fire smoke control systems
SDS series jet fans commonly include unidirectional and reversible bidirectional configurations.
6. Product Structure
Fan Casing
Features:
High strength steel casing
Corrosion-resistant coating
Suitable for tunnel environments
Options:
Carbon steel
Galvanized steel
Stainless steel
Impeller
Features:
Aerodynamic blade design
Aluminum alloy blades
Optimized thrust performance
Advantages:
High efficiency
Low energy consumption
Stable airflow
Motor
Standard configuration:
Totally enclosed motor
IP55 protection
Class H insulation
Options:
Standard motor
High-temperature motor
Special environment motor
Silencer
Optional:
Inlet silencer
Outlet silencer
Double silencer
Purpose:
Reduce noise
Improve tunnel environment
7. Main Advantages
High Thrust Performance
Tunnel jet fan performance is mainly evaluated by thrust force.
Advantages:
Strong airflow propulsion
Effective longitudinal ventilation
Suitable for large tunnel projects
Energy Saving Operation
Features:
Optimized aerodynamic design
Efficient motor system
Reduced airflow loss
Benefits:
Lower electricity consumption
Reduced operation cost
Low Noise Design
Important for:
Urban tunnels
Metro projects
Passenger transportation systems
Noise reduction methods:
Optimized impeller design
Silencer installation
Vibration control
Space Saving Installation
Advantages:
Ceiling suspension installation
No large ventilation duct required
Reduced civil construction cost
8. Tunnel Fire Smoke Extraction Application
Tunnel Smoke Extraction Jet Fan
During tunnel fire emergencies, jet fans assist smoke control by controlling airflow direction.
Functions:
Prevent smoke back-layering
Support evacuation
Improve emergency response
Fire-resistant tunnel jet fan options can be designed for high-temperature emergency operation according to project requirements.
9. Technical Specifications
Parameter Specification
Product Type Tunnel Ventilation Jet Fan
Fan Type Axial Flow Jet Fan
Application Tunnel Ventilation
Installation Ceiling / Wall Mounted
Diameter Range 630mm - 1600mm
Airflow Direction Single / Reversible
Thrust Customized
Motor Power Customized
Voltage Customized
Frequency 50Hz / 60Hz
Protection Grade IP55
Insulation Class H
Control Mode Direct Start / VFD
Typical SDS jet fan specifications include diameter ranges around 630mm–1600mm and maximum thrust values up to approximately 3500N depending on model configuration.
email：sales@ems-fanstech.com
Phone / WhatsApp：+8613806436890