The role of tunnel fans
Tunnel fans (tunnel jet fans) are the core equipment of tunnel ventilation systems, mainly used to maintain air circulation within the tunnel, ensure safety, and control the environment. Their core functions can be summarized as follows:
1. Ventilation and Air Quality Maintenance
Emissions of harmful gases: Harmful gases such as carbon monoxide and carbon dioxide from vehicle exhaust are expelled from the tunnel through forced ventilation to ensure fresh air.
Introduce fresh air: Through the longitudinal ventilation system of the jet fan, external air is drawn in from one end of the tunnel, while polluted air is discharged from the other end, creating a continuous airflow.
2. Fire Emergency and Smoke Exhaust
Quick Smoke Exhaust: During a fire, the direction of the fan (such as a bidirectional jet fan) can be adjusted to control the spread of smoke, providing a clear passage for personnel evacuation and firefighting operations.
Suppressing Fire: Reducing air circulation can slow the spread of fire and lower the risk of damage to tunnel structures.
3. Temperature and Humidity Control
Temperature Control: Relieves the accumulation of heat generated during vehicle operation, preventing equipment failures caused by high temperatures.
Humidity Management: Reduce moisture condensation during rainy and foggy weather, keep the road surface dry, and enhance driver visibility clarity.
4. Energy Conservation and Operation Optimization
Energy Consumption Regulation: By controlling the fan speed through frequency conversion technology or inverters, energy consumption and operational maintenance costs are reduced.
Smart Monitoring: Modern systems (such as vibration sensors) can analyze the status of wind turbines in real-time, reducing human misjudgment and maintenance costs.
