Numerical analysis of spatial and temporal distribution of exhaust emissions from multiple underground diesel vehicles under different idling conditions
Huajun Liu , Chengyi Liu , Wen Nie , Yun Hua , Xiao Yan , Jie Lian , Hao Wu , Xinyue Song
{"title":"Numerical analysis of spatial and temporal distribution of exhaust emissions from multiple underground diesel vehicles under different idling conditions","authors":"Huajun Liu , Chengyi Liu , Wen Nie , Yun Hua , Xiao Yan , Jie Lian , Hao Wu , Xinyue Song","doi":"10.1016/j.fuel.2024.132234","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, the temporal and spatial distribution of NO<sub>X</sub> and PM emissions from multiple underground diesel vehicles under different idling conditions were studied, and the high exhaust concentration risk zone from idling vehicles were identified, which posed a serious threat to the health of underground personnel. The results show that the working conditions of diesel vehicles in the meeting chamber have a certain impact on the exhaust emissions of diesel vehicles in the straight roadway. When the rear of the vehicle enters the chamber first, the diffusion trends of NO<sub>X</sub> and PM from the rear vehicle in the straight roadway are basically consistent. However, when the front of the vehicle enters the chamber first, the diffusion of PM from the rear vehicle in the straight roadway is slower than that of NO<sub>X</sub>, and the diffusion distances differ by 4 m. In addition, drivers at the rear of vehicles in the straight roadway and drivers at the front of vehicles in the chamber are more likely to encounter high exhaust concentrations. Therefore, suitable protective measures must be employed to ensure safe production.</p></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":null,"pages":null},"PeriodicalIF":6.7000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0016236124013826","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, the temporal and spatial distribution of NOX and PM emissions from multiple underground diesel vehicles under different idling conditions were studied, and the high exhaust concentration risk zone from idling vehicles were identified, which posed a serious threat to the health of underground personnel. The results show that the working conditions of diesel vehicles in the meeting chamber have a certain impact on the exhaust emissions of diesel vehicles in the straight roadway. When the rear of the vehicle enters the chamber first, the diffusion trends of NOX and PM from the rear vehicle in the straight roadway are basically consistent. However, when the front of the vehicle enters the chamber first, the diffusion of PM from the rear vehicle in the straight roadway is slower than that of NOX, and the diffusion distances differ by 4 m. In addition, drivers at the rear of vehicles in the straight roadway and drivers at the front of vehicles in the chamber are more likely to encounter high exhaust concentrations. Therefore, suitable protective measures must be employed to ensure safe production.
本研究对井下多辆柴油车在不同怠速工况下的 NO 和 PM 排放时空分布进行了研究,确定了怠速车辆的高尾气浓度风险区,对井下人员的健康构成了严重威胁。结果表明,会车室柴油车的工况对直行巷道柴油车的尾气排放有一定影响。当车辆后部先进入硐室时,后部车辆的 NO 和 PM 在笔直巷道中的扩散趋势基本一致。此外,在直行道上位于车辆后部的驾驶员和在密室中位于车辆前部的驾驶员更容易遇到高浓度的废气。因此,必须采取适当的防护措施,以确保安全生产。
期刊介绍:
The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.