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不同结构型式建筑外窗缝隙通风对建筑室内细颗粒物(PM2.5)浓度的影响
  • ISSN号:0254-0037
  • 期刊名称:《北京工业大学学报》
  • 时间:0
  • 分类:TU831.1[建筑科学—供热、供燃气、通风及空调工程] TU834.6[建筑科学—供热、供燃气、通风及空调工程]
  • 作者机构:[1]北京工业大学建筑工程学院,北京100124, [2]中国建筑科学研究院,北京100013
  • 相关基金:国家“十二五”科技支撑计划资助项目(2012BAJ02802,2012BAJ01B03);国家自然科学基金资助项目(51378024)
中文摘要:

为了把握不同结构型式建筑外窗对室外PM2.5阻隔特性及其影响规律,基于细颗粒物穿透机理与沉降特性,结合项目组2014年7月到2014年10月关于北京地区临街办公建筑室外及室内环境PM。〈质量浓度水平以及粒径分布特性的实时监测数据分析结果,重点比较分析了建筑外窗关闭且无室内源条件下,不同结构型式建筑外窗室外PM2.5气渗透特性及其变化规律,并给出了建筑外窗缝隙通风条什下,缝隙渗透通风作用压力却与建筑外窗缝隙结构特征、室外风速、室外空气相对湿度的关联式.研究结果表明:大气环境中粒径〉1.0μm的颗粒物不到10%,且粒径〈1.0μm的细颗粒物粒径分布随室外PM。气质量浓度的增加呈向较大粒径0.7~1.0μm转化趋势,反之呈向较小粒径0.3~0.5μm转化趋势;2个不同结构特性建筑外窗对粒径〈0.5μm细颗粒物的阻隔作用非常有限,对粒径〉0.5μm,特别是0.7~1.0μm粒径细颗粒物的阻隔作用明显增加;建筑外窗渗透通风作用压力△p、渗透系数Fin与室外风速呈正相关性、与室外空气相对湿度呈负相关性;更高气密性等级建筑外窗对室外PM。气侵入室内的阻隔性能始终优于低气密性等级建筑外窗.

英文摘要:

In order to evaluate the impact of windows with different structure characteristics on the building facade' s barrier property of PM2. 5 , a longitudinal monitor regarding PM2. 5 mass concentration and air particle size distribution was conducted in two offices located in Beijing, China. The two offices were equipped with windows with different structure characteristics, and both offices were monitored between July and October, 2014. In this paper, the characteristics of PM2. 5 infiltration of the two types of windows were compared and potential influential factors were identified,and the infiltration pressure △p was proposed and the relation among windows structure characteristics, wind speed and relative humidity was analyzed. The survey results showed that the proportion of outdoor air particles between 0. 7 ~1. 0μm was proportional to the outdoor PM2. 5 mass concentration, while the proportion of particles between 0. 3~0. 5μm was inversely proportional to the outdoor PM2. 5 mass concentration. The barrier property of both window types on particles smaller than 0. 7 μm was low. However, the windows with larger airtightness can show higher barrier property. From the study, the infiltration pressure△p and infiltration factor Fin showed to be affected by outdoor wind velocity and relative humidity. The △p and Fin of sampling site 1 were always lower than that of sampling site 2 .

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期刊信息
  • 《北京工业大学学报》
  • 中国科技核心期刊
  • 主管单位:北京市教委
  • 主办单位:北京工业大学
  • 主编:卢振洋
  • 地址:北京市朝阳区平乐园100号
  • 邮编:100124
  • 邮箱:xuebao@bjut.edu.cn
  • 电话:010-67392535
  • 国际标准刊号:ISSN:0254-0037
  • 国内统一刊号:ISSN:11-2286/T
  • 邮发代号:2-86
  • 获奖情况:
  • 中国高等学校自然科学学报优秀学报二等奖,北京市优秀期刊,华北5省市优秀期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),美国数学评论(网络版),德国数学文摘,荷兰文摘与引文数据库,美国剑桥科学文摘,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:11924