基于烟雾需风量的公路隧道通风方法研究
Road tunnel ventilation method study based on smoke-dilution air requirement
摘要：
引入机动车颗粒物的质量消光率，建立了机动车排放和非排放性颗粒物及NO2气体综合消光作用下的外部混合模型。提出了基于污染物排放因子的隧道烟雾需风量计算方法，与我国现有规范及PIARC 2004规范中烟雾需风量计算方法进行了比较，澄清了烟雾基准排放量的概念。计算得到重型机动车典型行驶工况下对应Pre-EU，EU-I～EU-IV排放标准的烟雾总需风量因子分别为2.84，1.9，1，0.89，0.78。
Abstract：
Introduces the concept of the mass extinction efficiency of particulates emitted by vehicles, establishes an external mixed model of the integrated extinction by vehicle exhaust fine particulates, non-pipe exhaust coarse particulates and NO2. Presents a calculation method of smoke-dilution air requirement in the tunnel according to the pollutant emission factors, and compares it with the corresponding methods in China’s current code and PIARC 2004. Clarifies the concepts of smoke baseline emissions. Obtains that the total airflow requirement factor of heavy duty vehicles in the typical driving condition is respectively 2.84，1.9，1，0.89 and 0.78 in the emission standards of Pre-EU，EU-I to EU-IV.
Keywords:road tunnel, smoke-dilution air requirement, heavy duty vehicle(HDV), emission factor, mass extinction efficiency, fine particulate, coarse particulate