Engineering Control of Airborne Disease Transmission in Health Care Facilities

Curseu, D.; Popa, Mirela Simona; Sîrbu, Dana

doi:10.1007/978-3-642-04292-8_1

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…For instance, most contagious bacteria have sizes within the fine range of 0.2—1 μm. Furthermore, airborne droplet nuclei (evaporated droplets generated by human respiratory activities) range from 1 to 5 μm . Curseu et al .…”

Section: Discussionmentioning

confidence: 99%

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A comparison between tracer gas and aerosol particles distribution indoors: The impact of ventilation rate, interaction of airflows, and presence of objects

et al. 2017

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The study investigated the separate and combined effects of ventilation rate, free convection flow produced by a thermal manikin, and the presence of objects on the distribution of tracer gas and particles in indoor air. The concentration of aerosol particles and tracer gas was measured in a test room with mixing ventilation. Three layouts were arranged: an empty room, an office room with an occupant sitting in front of a table, and a single-bed hospital room. The room occupant was simulated by a thermal manikin. Monodisperse particles of three sizes (0.07, 0.7, and 3.5 μm) and nitrous oxide tracer gas were generated simultaneously at the same location in the room. The particles and gas concentrations were measured in the bulk room air, in the breathing zone of the manikin, and in the exhaust air. Within the breathing zone of the sitting occupant, the tracer gas emerged as reliable predictor for the exposure to all different-sized test particles. A change in the ventilation rate did not affect the difference in concentration distribution between tracer gas and larger particle sizes. Increasing the room surface area did not influence the similarity in the dispersion of the aerosol particles and the tracer gas.

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Section: Discussionmentioning

confidence: 99%

“…Furthermore, airborne droplet nuclei (evaporated droplets generated by human respiratory activities) range from 1 to 5 μm . Curseu et al . also reported that spores of Aspergillus fumigatus have diameters of 2‐3.5 μm and can exhibit similar behavior in the air as droplet nuclei.…”

Section: Discussionmentioning

confidence: 99%

A comparison between tracer gas and aerosol particles distribution indoors: The impact of ventilation rate, interaction of airflows, and presence of objects

et al. 2017

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Airborne and aerosol pathogen transmission modeling of respiratory events in buildings: An overview of computational fluid dynamics

Sheikhnejad

Aghamolaei

Fallahpour

et al. 2022

Sustainable Cities and Society

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Pathogen droplets released from respiratory events are the primary means of dispersion and transmission of the recent pandemic of COVID-19. Computational fluid dynamics (CFD) has been widely employed as a fast, reliable, and inexpensive technique to support decision-making and envisage mitigatory protocols. Nonetheless, the airborne pathogen droplet CFD modeling encounters its limitations in the oversimplification of involved physics and the intensive computational demand. Moreover, uncertainties in the collected clinical data required to simulate airborne and aerosol transport such as droplets’ initial velocities, tempo-spatial profiles, release angle, and size distributions are broadly reported in the literature. Furthermore, there is a noticeable inconsistency around these collected data amongst many reported studies. Hence, this study aims to review the capabilities and limitations associated with CFD modeling. Setting the CFD models needs experimental data of respiratory flows such as velocity, particle size, and number distribution. Hence, we will also briefly review the experimental techniques used to measure the characteristics of airborne pathogen droplet transmissions together with their limitations and reported uncertainties. Moreover, the relevant clinical data related to pathogen transmission needed for postprocessing of CFD data and translating them to safety measures will also be reviewed. Eventually, we scrutinize the uncertainty and inconsistency of the existing clinical data available for airborne pathogen CFD analysis to pave a pathway toward future studies ensuing these identified gaps and limitations.

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Minimizing the respiratory pathogen transmission: Numerical study and multi-objective optimization of ventilation systems in a classroom

Arjmandi

Amini

khani

et al. 2022

Thermal Science and Engineering Progress

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Engineering Control of Airborne Disease Transmission in Health Care Facilities

Cited by 3 publications

References 6 publications

A comparison between tracer gas and aerosol particles distribution indoors: The impact of ventilation rate, interaction of airflows, and presence of objects

A comparison between tracer gas and aerosol particles distribution indoors: The impact of ventilation rate, interaction of airflows, and presence of objects

Airborne and aerosol pathogen transmission modeling of respiratory events in buildings: An overview of computational fluid dynamics

Minimizing the respiratory pathogen transmission: Numerical study and multi-objective optimization of ventilation systems in a classroom

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