Developing smart air purifier control strategies for better IAQ and energy efficiency using reinforcement learning

Shang, Wenzhe; Liu, Junjie; Wang, Congcong; Li, Jiayu; Dai, Xilei

doi:10.1016/j.buildenv.2023.110556

Cited by 10 publications

(2 citation statements)

References 36 publications

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“…Considering the many possible positions in which an infector can be sitting or an air purifier can be placed in real-world indoor settings, it would be very challenging to effectively control the infection risk to a very low level throughout the space using portable air purifiers. It is therefore proposed that advanced air purifier control strategies [29,30] should be developed or the air purifiers should be integrated with the central HVAC system for more efficient particle removal and infection control. More efforts should be devoted to the development of smart control strategies concerning air purifiers.…”

Section: Effects Of Air Purifier Locationsmentioning

confidence: 99%

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

Li,

Patel,

Cole

2023

Fluids

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Portable air purifiers have been extensively used to improve indoor air quality and mitigate the transmission of airborne diseases. However, the efficacy of mitigation is strongly affected by the interactions between jet flows of processed air from the air purifiers and the background airflows driven by the ventilation system. Critical factors in this context include the position and capacity of air purifiers and the ventilation rate of the heating ventilation and air-conditioning (HVAC) system. These factors are investigated in this study via computational fluid dynamics (CFD) simulations and the infection probability for different scenarios is quantified using the latest airborne infection predictive model incorporating recent pathological and clinical data for SARS-CoV-2. The results show that the use of air purifiers can significantly reduce the concentration of particulate matter, thus contributing to a generally lower risk of airborne transmission. However, the position of air purifiers affects their overall efficacy remarkably. Comparatively, a central HVAC system is more efficient at removing airborne particles under an equivalent ventilation rate assuming it uses a mixing ventilation scheme.

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Section: Effects Of Air Purifier Locationsmentioning

confidence: 99%

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

Li,

Patel,

Cole

2023

Fluids

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“…In addition, when an air conditioner utilizes a grid grille diffuser, compared to a dual-slot diffuser, the air conditioner is more compatible with portable air purifiers, leading to improved air purification outcomes. Shang et al [14] emphasized the significant impact of occupants' window-opening behavior on the indoor PM 2.5 concentration, and a reinforcement learning-based control strategy was proposed to provide better indoor air quality with lower energy consumption. Zhang et al [15] investigated the impact of air purifiers and window operation on the indoor air quality.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Impact on Indoor Air Quality: The Combined Use of Air Conditioners, Air Purifiers, and Fresh Air Systems

Jia,

Ge,

Wang

et al. 2024

Buildings

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As concerns about indoor air quality increase, air purifiers and fresh air systems are increasingly being used in conjunction with air conditioners in office buildings. To study the synergistic effects of multisystem joint operation on indoor air quality, this study used a combination of experimental and simulation methods to study the indoor particulate matter with a diameter of less than 2.5 µm (PM2.5) and carbon dioxide (CO2) concentrations under different operation conditions. The purification time and the PM2.5 concentration distribution under different conditions were compared with the condition in which the purifier was used alone. The results showed that the purification time required for the condition that the air conditioner runs together with the purifier was shortened by 15.2%. When the fresh air system is running together with the purifier, the purification time can be reduced by 30.4%. It was reduced by 32.6% when the three systems were operating at the same time. The PM2.5 concentration distribution under the joint operating condition was much more even than that under the condition in which the purifier was running alone. To analyze the impact on the CO2 distribution, the CO2 distributions under different joint operations were compared. The results show that the fresh air system can effectively dilute CO2 below 1000 ppm in 30 min. The air conditioner and purifier could help to mix the indoor air to provide a much more uniform indoor CO2 distribution.

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Ventilation and temperature control for energy-efficient and healthy buildings: A differentiable PDE approach

Bian,

Fu,

Gupta

et al. 2024

Applied Energy

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Developing smart air purifier control strategies for better IAQ and energy efficiency using reinforcement learning

Cited by 10 publications

References 36 publications

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

Portable Air Purifiers’ Predicted Efficacy in Mitigating Airborne Pathogen Transmission in an Office Room Featuring Mixing Ventilation

Synergistic Impact on Indoor Air Quality: The Combined Use of Air Conditioners, Air Purifiers, and Fresh Air Systems

Ventilation and temperature control for energy-efficient and healthy buildings: A differentiable PDE approach

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