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Tunnel fans inevitably generate noise during operation, including aerodynamic noise and mechanical noise. Among them, aerodynamic noise is the main noise, and its sound pressure level is usually more than 10 decibels higher than mechanical noise. It propagates into the surrounding air through the in
查看详情Ventilation and lighting design should not only consider normal traffic conditions, but also the fire conditions inside the tunnel.Requirements for tunnel jet fan:The custom for designing one-way traffic tunnels should be above 10m/s, and 12m/s may be used in special circumstances. The customs for t
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