Evaluating the performance of ventilation systems in Canadian multi-unit residential buildings

多单元住宅建筑（MURB），如社会住房，公寓楼和公寓，已被发现在能源效率，居住者舒适度和室内空气质量（IAQ）方面表现不佳。更糟糕的是，该建筑形式内爆发了许多COVID-19疫情，进一步危及居民的健康和福祉。考虑到在加拿大提供通风所涉及的能源问题，以及充分通风对改善室内空气质量和减少病毒传播的好处，确保MURB内通风系统的适当设计和控制至关重要。因此，本研究的目的是评估机械通风系统的性能在MURBs，因为它涉及到能源效率，室内空气品质，通风输送和居住者舒适度。将在三个具有集中式和分散式通风系统（两个在多伦多，一个在温哥华）和多域模型开发（气流和建筑物能量模型）的城市轨道交通中进行现场研究活动，以了解通风系统的设计和控制对城市轨道交通能耗、室内空气品质和居住者舒适度的影响。此外，我们亦会利用已发展的模型进行参数研究，以测试新技术的应用和现有通风系统的变化。该研究项目将产生关于MURBs中（分散）集中式通风系统性能的新知识，导致评估通风系统性能的新的现场研究方法，以及其设计和控制的创新策略，所有这些都将提高能源效率，IAQ和居住者舒适度。

Multi-unit residential buildings (MURBs), such as social housing, apartment buildings, and condominiums,have been found to underperform with respect to energy efficiency, occupant comfort, and indoor air quality (IAQ). To make matters worse, there have been numerous reports of COVID-19 outbreaks within this building form, further jeopardizing resident health and well-being. Given the energy implications associated with providing ventilation in Canada and the benefits of sufficient ventilation on improving IAQ and reducing virus transmission, it is essential to ensure proper design and control of ventilation systems within MURBs. Therefore, this research aims to assess mechanical ventilation system performance within MURBs as it relates to energy efficiency, IAQ, ventilation delivery, and occupant comfort. Field study campaigns in three MURBs with centralized and decentralized ventilation systems (two in Toronto and one in Vancouver) and multi-domain model development (airflow and building energy models) will be performed to understand the implications that the design and control of ventilation systems can have on MURB energy consumption, IAQ, and occupant comfort. In addition, parametric studies using the developed models will be conducted to test the application of novel technologies and variations to existing ventilation systems. This research project will generate new knowledge regarding the performance of (de)centralized ventilation systems in MURBs, lead to novel field study methods for assessing ventilation system performance, and to innovative strategies for their design and control, all of which will improve energy efficiency, IAQ, and occupant comfort within MURBs.