Multi-zone simulation of outdoor particle penetration and transport in a multi-story building
Multi-zone simulation of outdoor particle penetration and transport in a multi-story building
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DOI：
10.1007/s12273-016-0340-1
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发表时间：
2017-08-01
影响因子：
5.5
通讯作者：
Kim, Kwang Woo
中科院分区：
文献类型：
--
作者：
Lee, Byung Hee;Yee, Su Whan;Kim, Kwang Woo
在环境空气质量较差的地区，室内颗粒物浓度可能会受到室外颗粒物的显着影响。多区域、多层建筑由于其气流特性更为复杂，其室内环境受到室外颗粒物的影响与单户住宅不同。本研究的目的是使用 CONTAMW 模拟分析多区域和多层建筑中的室外颗粒渗透和传输及其对室内空气的影响。对于气流和颗粒传输分析，通过现场实验确定建筑泄漏、渗透系数和沉积率。寒冷冬季气流模拟结果表明，室外空气从建筑物下部渗入，从上部渗出。颗粒模拟的结果还表明，气流特性与沉积率相结合，导致多层建筑的较低楼层暴露于比建筑物较高楼层更高的细颗粒浓度。研究表明，CONTAMW 模拟可通过识别关键颗粒传输参数和经过验证的气流模拟来分析室外颗粒对室内环境的影响。
In areas with poor ambient air quality, indoor particle concentrations can be significantly affected by particulate matter originating outdoors. The indoor environments of multi-zone and multi-story buildings are affected differently by outdoor particles compared with single-family houses, because of the buildings' more complicated airflow characteristics. The objective of this study is to analyze outdoor particle penetration and transport, and their impact on indoor air, in a multi-zone and multi-story building using a CONTAMW simulation. For the airflow and particle transport analysis, the building leakage, penetration coefficients, and deposition rates were determined by on-site experiments. The results of airflow simulations for cold winters show that outdoor air infiltrates through the lower part of building and exfiltrates from the upper part. The results of the particle simulation also indicated that the airflow characteristics, combined with deposition rates, cause the lower floors of a multi-story building to be exposed to higher fine particle concentrations compared with the upper floors of the building. The study demonstrated that the CONTAMW simulation can be useful in analyzing the impact of outdoor particles on indoor environments through the identification of key particle transport parameters and validated airflow simulations.