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热那亚一条长400米的公路隧道通风,是通过采用包括四台1400毫米可变倾角轴流风机的半横向供风系统而实现的。这些风机分成两组各两台进行控制。按设计要求,送风量为220米~3/秒,且满足隧道中一氧化碳浓度不高于155 ppm,烟尘含量不高于5毫克/米~3的要求。给出了不同交通情况下隧道中一氧化碳和烟尘含量的数据。
A 400-meter road tunnel ventilation in Genoa was achieved through the use of a semi-transverse air supply system consisting of four 1400 mm variable-pitch axial fans. These fans are divided into two groups and two for control. According to the design requirements, the air supply is 220m ~ 3 / s, and meet the requirements of the tunnel carbon monoxide concentration is not higher than 155 ppm, soot content is not higher than 5 mg / m ~ 3. The data of carbon monoxide and soot contents in tunnels under different traffic conditions are given.