Decoupling transient effects of factors affected by air recirculation devices on contaminant distribution in ventilated spaces

Shao, Xueming; Hao, Yunfeng; Liu, Yu; Li, Xianting; Ma, Xiaojun

doi:10.1016/j.buildenv.2021.108339

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…(1) Physical phenomena with multiple factors: The supply air distribution in a space involves multiple physical principles, such as turbulent airflow structure and buoyancy effects. Recent studies have included the interaction of airflow with indoor air recirculation devices (e.g., portable air purifiers) [78], unsteady airflow for air mixing [79], and the impact of air distribution on the performance of solar-based cooling systems [80] exhaust rates only and a balanced approach (where supply air is also modulated). For example, Pavlovas [111] modulated the exhaust rate from 10 L/s to 30 L/s based on three CO 2 levels (800, 1000, and 1200 ppm) and three relative humidity levels (60%, 70%, and 80%).…”

Section: Room Air Distributionmentioning

confidence: 99%

Review of Engineering Controls for Indoor Air Quality: A Systems Design Perspective

2023

Sustainability

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This paper aims to review the engineering controls for indoor air quality (IAQ) from a systems design perspective. As a result of the review, we classify the literature content into three categories: (1) indoor air treatments, (2) dissemination control strategies, and (3) information technology. Indoor air treatments can be generally interpreted as the “cleaning” aspect, which covers ventilation and contaminant removal techniques. Dissemination control focuses on how contaminants generated in an indoor space can be transmitted, where four types of dissemination are classified. The category of information technology discusses IAQ sensors for monitoring, as well as the applications of the Internet of Things and IAQ data. Then, we further analyze the reviewed engineering controls by performing systems and functional analysis. Along with a discussion of IAQ functions, we suggest some systems design techniques, such as functional decoupling and design for flexibility/resilience, which are expected to promote more systems thinking in designing IAQ solutions.

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