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首页> 外文期刊>Building and Environment >Infiltration of outdoor combustion-generated pollutants to indoors due to various ventilation regimes: A case of a single-family energy efficient building
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Infiltration of outdoor combustion-generated pollutants to indoors due to various ventilation regimes: A case of a single-family energy efficient building

机译：各种通风方式导致室外燃烧产生的污染物渗入室内：以单户节能建筑为例

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The paper presents the quantitative assessment of the influence of various ventilation regimes on particulate matter and polycyclic aromatic hydrocarbon concentrations in the newly built, low energy unoccupied house. Experimental measurements were conducted over five-week period of February-March, which is affected by combustion particles resulting from residential heating and traffic in outdoor air. Number concentrations of particles (PNC0.3-10), mass concentration of PM2.5, as well as vapor and particle phase polycyclic aromatic hydrocarbons (PAHs) were measured both outdoors and indoors during several ventilation regimes. Ventilation regime with minimum natural and no mechanical ventilation (air change rate (ACR) of 0.16 1/h) caused the lowest infiltration of outdoor pollutants in this particular building as represented by I/O ratio of PM2.5 (0.22), PNC0.3-10 (0.20), and total PAHs (0.23 and 0.33 for particle and vapor phase, respectively). Natural ventilation via leaky windows regime (ACR - 0.42 1/h) caused the highest infiltration of the particles and PPAHs (I/O PM2.5-0.45, PNC0.3-10 - 0.51, and PPAHs - 0.47). At the same time, mechanical ventilation resulted in the highest I/O of VPAHs of 0.58 at ACR of 0.80 1/h, while I/O of PPAHs were moderate (0.38-0.45). Such results indicate that outdoor combustion particles are only partially arrested in a filter commonly installed in air handling units (grade F7, ePM(2.5)= 66%). At the same time, conventional residential air filtration systems are less efficient in the removal of gas phase pollutants, which needs to be addressed by specific engineering measures.
机译：本文提出了对新建低能耗空置房屋中各种通风方式对颗粒物和多环芳烃浓度影响的定量评估。在2月至3月的五周时间内进行了实验测量，该测量受到住宅供暖和室外空气流通产生的燃烧颗粒的影响。在几种通风方式下，在室外和室内对颗粒物的数量浓度（PNC0.3-10），PM2.5的质量浓度以及气相和颗粒相多环芳烃（PAHs）进行了测量。自然空气最少且没有机械通风的通风方式（空气变化率（ACR）为0.16 1 / h）导致该特定建筑物中室外污染物的渗透最少，以PM2.5的I / O比（0.22）PNC0表示。 3-10（0.20）和总PAH（颗粒和气相分别为0.23和0.33）。通过泄漏窗口制度（ACR-0.42 1 / h）进行的自然通风导致了颗粒和PPAH（I / O PM2.5-0.45，PNC0.3-10-0.51和PPAH-0.47）的最大渗透。同时，机械通气导致VPAH的最高I / O为0.58，ACR为0.80 1 / h，而PPAH的I / O中等（0.38-0.45）。这些结果表明，室外燃烧颗粒仅部分捕集在通常安装在空气处理单元中的过滤器中（等级F7，ePM（2.5）= 66％）。同时，常规的住宅空气过滤系统在去除气相污染物方面效率较低，这需要通过特定的工程措施加以解决。

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