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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：由于各种通风制度，户外燃烧产生的污染物渗透到室内：一个单独的节能建筑

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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，低能量未占用房屋中的各种通风制度对颗粒物质和多环芳烃浓度的影响的定量评估。实验测量是在2月至3月的五周期内进行的，这受燃烧颗粒的影响，由户外空气中的住宅供热和交通产生。在几种通风制度期间，在户外和室内测量颗粒颗粒（PNC 0.3-10），PM2.5的质量浓度以及蒸气和颗粒相多环芳烃（PAH）。通风制度，最小自然，无机械通风（空气变化率（ACR）为0.16 1 / h）导致该特殊建筑物中的户外污染物的最低渗透，如I / O比PM2.5（0.22），PNC0的比例所示。 3-10（0.20）和总PAHs（分别为颗粒和气相0.23和0.33）。通过泄漏的窗口制度（ACR - 0.42 1 / h）的自然通风引起颗粒和PPAH的最高渗透（I / O PM2.5-0.45，PNC0.3-10-0.51和PPAH - 0.47）。同时，机械通风导致VPAH的最高I / O为0.58，可在0.80 1 / h，而PPAH的I / O中等（0.38-0.45）。这些结果表明，室外燃烧颗粒仅在通常安装在空气处理单元（F7等级F7，EPM（2.5）= 66％）的过滤器中被部分地被停留。同时，传统的居民空气过滤系统在除去气相污染物中的效率较低，这需要通过特定的工程措施来解决。

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