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Air quality in archives housed in historic buildings: Assessment of concentration of indoor particles of outdoor origin
Building and Environment ( IF 7.1 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.buildenv.2020.107024
Ludmila Mašková , Jiří Smolík , Jakub Ondráček , Lucie Ondráčková , Tereza Travnickova , Jaromir Havlica

Abstract Indoor air pollution in archives can cause irreversible degradation of materials stored there. Thus, detailed information about indoor air quality is essential before control strategies could be investigated. In a period 2008–2019, the relationship between the indoor and outdoor pollution was investigated in four naturally ventilated archives located in historical buildings and situated in regions with different outdoor air quality. The indoor and outdoor particle number, mass, and chemical size distributions were measured during different seasons. Moreover, air change rates ( a ), penetration coefficients (P), and deposition velocities (Vd) were determined. The results revealed that the most important source of the indoor particulate matter was the outdoor air. The size-resolved data with no indoor sources were evaluated using the steady-state solution of the mass balance equation as the I/O ratio. The results showed that all parameters ( a , P, and Vd) determined in archives were comparable with low seasonal variation, probably due to the similar building characteristics. Further, the typical average values of the I/O ratio for naturally ventilated historical buildings were estimated. Finally, the long-term indoor concentrations, for periods when no measurement was in place, were determined using data from the local monitoring network. The results showed that the higher level of pollution and therefore the higher degree of degradation is expected in depositories located in highly polluted regions.

中文翻译:

历史建筑中档案馆的空气质量:室外来源的室内颗粒浓度评估

摘要 档案馆的室内空气污染会导致存放在那里的资料发生不可逆转的降解。因此,在调查控制策略之前,有关室内空气质量的详细信息是必不可少的。2008-2019年期间,在位于历史建筑内和室外空气质量不同的地区的四个自然通风档案馆调查了室内外污染的关系。在不同季节测量了室内和室外的颗粒数量、质量和化学尺寸分布。此外,还确定了空气变化率 (a)、渗透系数 (P) 和沉积速度 (Vd)。结果表明,室内颗粒物的最重要来源是室外空气。使用质量平衡方程的稳态解作为 I/O 比来评估没有室内源的尺寸分辨数据。结果表明,档案中确定的所有参数(a、P 和 Vd)都具有可比性,季节性变化较小,这可能是由于相似的建筑特征。此外,还估算了自然通风历史建筑的 I/O 比的典型平均值。最后,在没有进行测量的时期内,长期室内浓度是使用来自当地监测网络的数据确定的。结果表明,位于高污染地区的储存库的污染程度更高,因此降解程度也更高。档案中确定的 P 和 Vd) 与低季节性变化相当,这可能是由于相似的建筑特征。此外,还估算了自然通风历史建筑的 I/O 比的典型平均值。最后,在没有进行测量的时期内,长期室内浓度是使用来自当地监测网络的数据确定的。结果表明,位于高污染地区的储存库的污染程度更高,因此降解程度也更高。档案中确定的 P 和 Vd) 与低季节性变化相当,这可能是由于相似的建筑特征。此外,还估算了自然通风历史建筑的 I/O 比的典型平均值。最后,在没有进行测量的时期内,长期室内浓度是使用来自当地监测网络的数据确定的。结果表明,位于高污染地区的储存库的污染程度更高,因此降解程度也更高。对于没有进行测量的时期,使用来自当地监测网络的数据确定。结果表明,位于高污染地区的储存库的污染程度更高,因此降解程度也更高。对于没有进行测量的时期,使用来自当地监测网络的数据确定。结果表明,位于高污染地区的储存库的污染程度更高,因此降解程度也更高。
更新日期:2020-08-01
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