摘要
本文以大连市某典型路段为测试地点,对街道、临街及远街建筑物内空气质量进行实测,测试项目包括温度、湿度、风速及室内外PM2.5浓度。通过对监测数据分析发现,测试期间街道PM2.5浓度平均值为98.46μg/m3,超标率达81.25%,污染程度严重;街道PM2.5的浓度变化受气象条件综合影响,与温度和相对湿度变化呈一定的正相关性,与风速变化呈负相关性;临街建筑室内PM2.5浓度与街道PM2.5浓度具有正相关性,主要受通过围护结构渗透进入室内的室外污染源影响;远街建筑的PM2.5浓度与街道PM2.5浓度相关性较弱,主要受室内污染源影响。
This article takes a typical road section of Dalian as testing location, collects the data of air quality from the street, frontage and the far away street building area, test items, including temperature, relative humidity, wind speed and indoor and outdoor PM2.5 concentrations. By analyzing the monitoring data analysis, it was found that the mean streets of PM2.5 concentrations during the test was 98.46txg/m3, exceeded the rate of 81.25%, reach to the severe pollution levels; changes in the concentration of PM2.5 in the street by the combined effects of weather conditions, with the temperature and relative humidity were positively correlated, and the wind speed was negatively correlated; street construction and street indoor PM2.5 concentrations a positive correlation between the concentration of PM2.5, mainly due to penetration into the interior through the effects of outdoor pollution envelope; PM2.5 concentrations the far away street buildings and streets PM2.5 concentrations of PM2.5 concentration of weak correlation, mainly affected by indoor sources,
出处
《建筑热能通风空调》
2015年第6期23-25,48,共4页
Building Energy & Environment
基金
国家自然科学基金(51308088)
国家"十二五"科技支撑计划课题(2012BAJ 02B05)
高等学校博士学科点专项科研基金资助课题(20120041120003)
北京市重点实验室研究基金(NR2013K05)
大连理工大学基本科研业务费专项项目(DUT14QY24)
