Through systematic scenario-based design, the tunnel ventilation and air handling system can achieve a balanced integration of multiple requirements, including energy consumption reduction, improved comfort, and environmental protection.
1. Fast response time for reverse switching – capable of switching to smoke extraction mode within 60 seconds of a fire outbreak.
2. High-temperature resistance – can operate normally for more than 2 hours at 280 °C.
3. Ensures tunnel airflow during peak traffic hours while removing harmful gases such as CO, NO, and NO₂.
Technical Highlights
Leveraging technologies such as three-dimensional flow theory and variable circulation optimization design, the company has developed a series of tunnel ventilation products featuring compact footprint, low flow resistance, high efficiency, and high balance grade. The company pioneered the development in China of large-scale, variable-pitch, airfoil-blade axial fans for highway tunnels and subsea/river-crossing tunnels. The product performance indicators have reached internationally advanced levels, with energy consumption reduced by approximately 10% compared to conventional fans. This technology has been successfully applied in the Qinling Zhongnanshan Tunnel, the world’s longest two-way highway tunnel.
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