Performance of a heat recovery ventilation system for controlling human exposure to airborne particles in a residential building
Performance of a heat recovery ventilation system for controlling human exposure to airborne particles in a residential building
复制标题
用于控制人体暴露于住宅建筑中空气颗粒的热回收通风系统的性能
DOI：
10.1016/j.buildenv.2023.110412
复制
发表时间：
2023
影响因子：
7.4
通讯作者：
Rim, Donghyun
中科院分区：
文献类型：
--
作者：
Park, Seongjun;Lee, Shinhye;Yeo, Myoung-Souk;Rim, Donghyun
热回收通风（HRV）系统是一种新兴的可持续技术，以减少人类暴露于空气污染物的住宅建筑。然而，有一个缺乏信息的HRV系统性能控制室内产生的和室外产生的颗粒在住宅建筑。为了填补这一知识空白，我们进行了现场监测室内空气中的颗粒物与两个代表性的HRV系统的操作模式（通风和循环模式）在一个全面的住宅试验台。结果表明，过滤器效率，风量，过滤器的HRV系统的旁路系数对室内颗粒物浓度起重要作用。运行HRV系统时，室内外浓度比降低72%-92%。对于循环和通风模式，旁路系数对于HRV系统的颗粒去除性能至关重要。与无旁路情况相比，20%的过滤器旁路系数导致室内暴露于室外来源和室内产生的PM2.5增加50%。虽然循环模式比通风模式表现更好，但具有最小旁通系数的两种操作模式都可以有效地去除室内排放源（例如，香柱燃烧和培根平底锅油炸）。研究结果表明，HRV系统可以减少56%-90%的人体暴露于室内产生的颗粒，颗粒控制性能取决于最大限度地减少HRV过滤器旁路。
Heat recovery ventilation (HRV) system is emerging as a sustainable technology to reduce human exposure to air pollutants in residential buildings. However, there is a lack of information on the HRV system performance for controlling both indoor-generated and outdoor-generated particles in a residential building. To fill this knowledge gap, we conducted field monitoring of indoor airborne particles with two representative HRV system operating modes (ventilation and circulation modes) in a full-scale residential testbed. The results reveal that the filter efficiency, airflow rate, and filter bypass factor of the HRV system play important roles in indoor particle concentrations. The indoor/outdoor concentration ratio is reduced by 72%–92% when operating the HRV system. For both circulation and ventilation modes, the bypass factor is crucial for the particle removal performance of the HRV system. A 20% filter bypass factor leads to up to a 50% increase in indoor exposure to outdoor-originated and indoor-generated PM2.5compared to the no-bypass scenario. Although circulation mode performed better than ventilation mode, both operating modes with a minimal bypass factor can effectively remove particles generated from indoor emission sources (e.g., incense stick burning and bacon pan frying). The study results suggest that HRV system can reduce human exposure to indoor-generated particles by 56%–90% and particle control performance hinges upon minimizing HRV filter bypass.