北京运通隧道污染物排放特性与需风量预测分析

Analysis on pollutant emission characteristics and air demand prediction in Beijing Yuntong tunnel

根据机动车排放标准更新趋势判断,隧道内积累NOx排放所需风量已超越CO排放所需风量,隧道内行驶机动车排放NOx与排放隧道内NOx将成为研究重点。此次研究根据北京运通隧道的交通特征及机动车排放因子的更新预测结果对隧道内近期、中期、远期机动车排放NOx和CO的水平进行预测,进而计算三个特征年份排放污染物的设计需风量,根据预测需风量对隧道内各风机段的开启情况进行指导,研究结果为城市隧道智能化通风节能控制和环境评价提供数据支撑。

According to the update trend of motor vehicle emission standards,the air volume required for NOx accumulation in the tunnel has exceeded that required for CO emission,and NOx emission from motor vehicles in the tunnel and NOx emission from the tunnel will become the research focus.According to the traffic characteristics of Beijing Yuntong Tunnel and the updated prediction results of motor vehicle emission factors,this study predicts the levels of NOx and CO emitted by motor vehicles in the tunnel in the short term,medium term and long term,and then calculates the design air demand of pollutant emission in three characteristic years.According to the predicted air volume required,the opening of each fan section in the tunnel is guided.The research results provide data support for the intelligent ventilation and energy saving control and environmental evaluation of urban tunnels.