Effects of types of ventilation system on indoor particle concentrations in residential buildings
Effects of types of ventilation system on indoor particle concentrations in residential buildings
复制标题
DOI：
10.1111/ina.12117
复制
发表时间：
2014-12-01
期刊：
影响因子：
5.8
通讯作者：
Jeong, J. -W.
中科院分区：
文献类型：
--
作者：
Park, J. S.;Jee, N. -Y.;Jeong, J. -W.
本研究的目的是量化通风系统对住宅建筑室内颗粒物浓度的影响。从三个地点选出了15套有人居住的单户公寓。这三个场地有三种不同的通风系统：非平衡机械通风、平衡机械通风和自然通风。实地测量是在2012年4月至6月期间进行的，当时室外空气温度舒适。在室外和室内连续测量颗粒物PM2.5和CO2的数量浓度。在自然通风的公寓中，颗粒物数浓度的I/O比对于亚微米颗粒物为0.56 ~ 0.72，对于大于1.0m的颗粒物为0.25 ~ 0.60。当公寓机械通风时，亚微米颗粒物的日平均室内颗粒物浓度降至室外水平以下50%，细颗粒物的日平均室内颗粒物浓度降至室外水平以下25%。与自然通风相比，两种机械通风系统使亚微米颗粒物的I/O比降低了26%，使细颗粒物的I/O比降低了65%。这些结果表明，机械通风可以减少住宅建筑物中室外颗粒物的暴露。
The objective of this study was to quantify the influence of ventilation systems on indoor particle concentrations in residential buildings. Fifteen occupied, single-family apartments were selected from three sites. The three sites have three different ventilation systems: unbalanced mechanical ventilation, balanced mechanical ventilation, and natural ventilation. Field measurements were conducted between April and June 2012, when outdoor air temperatures were comfortable. Number concentrations of particles, PM2.5 and CO2, were continuously measured both outdoors and indoors. In the apartments with natural ventilation, I/O ratios of particle number concentrations ranged from 0.56 to 0.72 for submicron particles, and from 0.25 to 0.60 for particles larger than 1.0m. The daily average indoor particle concentration decreased to 50% below the outdoor level for submicron particles and 25% below the outdoor level for fine particles, when the apartments were mechanically ventilated. The two mechanical ventilation systems reduced the I/O ratios by 26% for submicron particles and 65% for fine particles compared with the natural ventilation. These results showed that mechanical ventilation can reduce exposure to outdoor particles in residential buildings.