Occupant-centric robotic air filtration and planning for classrooms for Safer school reopening amid respiratory pandemics

Yang, Haoguang; Balakuntala, Mythra V.; Quiñones, Jhon J.; Kaur, Upinder; Moser, Abigayle E.; Doosttalab, Ali; Esquivel-Puentes, Antonio; Purwar, Tanya; Castillo, Luciano; Ma, Xin; Zhang, Lucy T.; Voyles, Richard M.

doi:10.1016/j.robot.2021.103919

Cited by 5 publications

(1 citation statement)

References 42 publications

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“…The system developed in this study allows for nozzle changes with position feedback, without the need of manual intervention. This modification allows the system to be flexible and smart, making it efficient for use as a prospective autonomous and intelligent cleaning robot [ 92 ].…”

Section: Discussionmentioning

confidence: 99%

Electrostatic Spray Disinfection Using Nano-Engineered Solution on Frequently Touched Surfaces in Indoor and Outdoor Environments

Purwar

Dey

Al-Kayyali

et al. 2022

IJERPH

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The COVID-19 pandemic has resulted in high demand for disinfection technologies. However, the corresponding spray technologies are still not completely optimized for disinfection purposes. There are important problems, like the irregular coverage and dripping of disinfectant solutions on hard and vertical surfaces. In this study, we highlight two major points. Firstly, we discuss the effectiveness of the electrostatic spray deposition (ESD) of nanoparticle-based disinfectant solutions for systematic and long-lasting disinfection. Secondly, we show that, based on the type of material of the substrate, the effectiveness of ESD varies. Accordingly, 12 frequently touched surface materials were sprayed using a range of electrostatic spray system parameters, including ion generator voltage, nozzle spray size and distance of spray. It was observed that for most cases, the surfaces become completely covered with the nanoparticles within 10 s. Acrylic, Teflon, PVC, and polypropylene surfaces show a distinct effect of ESD and non-ESD sprays. The nanoparticles form a uniform layer with better surface coverage in case of electrostatic deposition. Quantitative variations and correlations show that 1.5 feet of working distance, an 80 μm spray nozzle diameter and an ion generator voltage of 3–7 kV ensures a DEF (differential electric field) that corresponds to an optimized charge-to-mass ratio, ensuring efficient coverage of nanoparticles.

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Section: Discussionmentioning

confidence: 99%

Electrostatic Spray Disinfection Using Nano-Engineered Solution on Frequently Touched Surfaces in Indoor and Outdoor Environments

Purwar

Dey

Al-Kayyali

et al. 2022

IJERPH

Self Cite

View full text Add to dashboard Cite

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Effectiveness of air cleaner on mitigating the transmission of respiratory disease in a dental clinic environment

Yang,

Wang,

Chan

et al. 2024

Build. Simul.

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In dental clinics with an open floor plan, the risk of patient-to-patient transmission of respiratory disease is a concern. During dental procedures large amounts of bioaerosol are produced and patients cannot wear personal protective equipment. This paper examines how to effectively deploy air cleaner to reduce the infection risk in dental clinics with an open floor plan. Various locations of air cleaners at various clean air delivery rates (CADRs) were investigated. The dispersion of bioaerosol was studied through numerical simulations, and risk assessment was performed by a dose-response method. The findings indicated that dental patients downstream of the background ventilation have a higher infection risk than those to the left and right of an infected patient (i.e., the source). The lowest infection risks for the adjacent patients were found when the air cleaner was place opposite to the dentists, i.e., on the floor at low CADR levels of 2.2 m3/min or on the bench at CADR levels of 4.4 m3/min or greater. The results of this study indicated that air cleaner can mitigate the risk of patient-to-patient transmission of SARS-CoV-2 in dental clinics with an open floor plan. Background CADR levels determine the optimal placement of air cleaners.

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Disinfection robots scheduling and routing problem for healthy buildings

Liu,

Xu,

Jin

et al. 2024

Journal of Building Engineering

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Occupant-centric robotic air filtration and planning for classrooms for Safer school reopening amid respiratory pandemics

Cited by 5 publications

References 42 publications

Electrostatic Spray Disinfection Using Nano-Engineered Solution on Frequently Touched Surfaces in Indoor and Outdoor Environments

Electrostatic Spray Disinfection Using Nano-Engineered Solution on Frequently Touched Surfaces in Indoor and Outdoor Environments

Effectiveness of air cleaner on mitigating the transmission of respiratory disease in a dental clinic environment

Disinfection robots scheduling and routing problem for healthy buildings

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