For achieving building energy efficiencies and savings, most countries include in their standard regulations either required or recommended minimum airtightness levels. Good building airtightness levels may allow installation of smaller heating and cooling capacities to achieve a better thermal comfort performance and allow prevention of outdoor pollutants, e.g. particulate matters (PMs), from entering indoor spaces. However, indoor air quality (IAQ) may suffer as a result of suppression of indoor pollutants, due to the limited ventilation and infiltration, which could adversely affect indoor occupants’ health and productivity. To counteract these negative effects and meet the IAQ standards, the demand for ventilation may consequently increase, which in turn may cause more energy consumption for the operation of the required ventilation. Hence, there seemingly always exists a paradox as a result of close interactions among ventilation, IAQ, energy efficiency and comfort in buildings. Under this circumstance, new and emerging technologies could create a series of new opportunities and challenges thatmay provide solutions to the existing paradox, which cannot be done in the past, including advanced ventilation systems, optimized system sensing, monitoring and controlling technologies and data analytics, e.g. artificial intelligence for self-adjusted multimode ventilation, fast prediction and design of indoor environment using Computational Fluid Dynamics (CFD), etc. This special issue is to provide a platform to share the research work on the design and operation strategies of new and emerging technologies for advanced building ventilation systems in response to the demand of better indoor environment and energy efficiency. Original and review research papers on the following topics are included:

中文翻译：

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新兴的建筑通风技术

为了实现建筑能源效率和节约，大多数国家在其标准法规中都包括要求或建议的最低气密性水平。良好的建筑气密性可以允许安装较小的加热和冷却能力，以实现更好的热舒适性能，并防止室外污染物，例如颗粒物 (PM) 进入室内空间。然而，室内空气质量 (IAQ) 可能会因室内污染物受到抑制而受到影响，因为通风和渗透有限，这可能会对室内居住者的健康和生产力产生不利影响。为了抵消这些负面影响并满足室内空气质量标准，对通风的需求可能会因此增加，这反过来可能会导致所需通风操作的更多能源消耗。因此，建筑中通风、室内空气质量、能源效率和舒适度之间的密切相互作用似乎总是存在一个悖论。在这种情况下，新兴技术可以创造一系列新的机遇和挑战，可以为现有的悖论提供解决方案，这在过去是无法解决的，包括先进的通风系统、优化的系统传感、监测和控制技术以及数据分析，例如用于自调节多模式通风的人工智能、使用计算流体动力学 (CFD) 的室内环境快速预测和设计等。本期特刊旨在提供一个平台，分享先进建筑通风系统的新技术和新兴技术的设计和运行策略的研究工作，以响应更好的室内环境和能源效率的需求。包括以下主题的原始和评论研究论文：