Examination of human interaction on indoor environmental quality variables: A case study of libraries at the University of Alberta

Shum, Caitlyn; Alipouri, Yousef; Zhong, Lexuan

doi:10.1016/j.buildenv.2021.108476

Cited by 19 publications

(10 citation statements)

References 60 publications

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“…Whereas, CFD is a powerful and low-cost approach to counteracting the spread and transmission of viral diseases [ 11 ]. Meanwhile, researchers have used computational modeling techniques to assess the potential effectiveness of non-pharmaceutical reduction strategies [ 12 ] for a wide range of indoor environments, such as: classroom [ 13 , 14 ], library [ 15 ], world-real train cabin [ 16 ], car parking [ 17 ], urban subway [ 18 ], and airplane [ 19 ]. As with many other confined spaces, the air quality for PT, such as train cabins, is a primary and vital determining factor for transmission of COVID-19.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective performance assessment of HVAC systems and physical barriers on COVID-19 infection transmission in a high-speed train

Ahmadzadeh¹,

Shams²

2022

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 99%

Multi-objective performance assessment of HVAC systems and physical barriers on COVID-19 infection transmission in a high-speed train

Ahmadzadeh¹,

Shams²

2022

Journal of Building Engineering

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“…They indicated that keeping a social distance is an important way to combat COVID-19. Some other non-pharmacological methods that can play a vital role in breaking the transmission chain are: creating physical barriers 28 , 29 , using ultraviolet inactivating lamps 30 , 31 employing the air purifiers systems 32 – 34 , controlling the HVAC systems 26 , 35 – 37 and so on.…”

Section: Introductionmentioning

confidence: 99%

A numerical approach for preventing the dispersion of infectious disease in a meeting room

Ahmadzadeh

Shams

2022

Sci Rep

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Airborne transmission of respiratory aerosols carrying infectious viruses has generated many concerns about cross-contamination risks, particularly in indoor environments. ANSYS Fluent software has been used to investigate the dispersion of the viral particles generated during a coughing event and their transport dynamics inside a safe social-distance meeting room. Computational fluid dynamics based on coupled Eulerian–Lagrangian techniques are used to explore the characteristics of the airflow field in the domain. The main objective of this study is to investigate the effects of the window opening frequency, exhaust layouts, and the location of the air conditioner systems on the dispersion of the particles. The results show that reducing the output capacity by raising the concentration of suspended particles and increasing their traveled distance caused a growth in the individuals' exposure to contaminants. Moreover, decreasing the distance between the ventilation systems installed location and the ceiling can drop the fraction of the suspended particles by over 35%, and the number of individuals who are subjected to becoming infected by viral particles drops from 6 to 2. As well, the results demonstrated when the direction of input airflow and generated particles were the same, the fraction of suspended particles of 4.125%, whereas if the inputs were shifted to the opposite direction of particle injection, the fraction of particles in fluid increased by 5.000%.

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“…They indicated that keeping the social distancing is an important way to combat the COVID-19. Some other non-pharmacological methods that can play a vital role in breaking the transmission chain are: creating physical barriers 29,30 , using ultraviolet inactivating lamps 31,32 employing the air purifiers systems [33][34][35] , controlling the HVAC systems 27,[36][37][38] and so on.…”

Section: Introductionmentioning

confidence: 99%

A numerical approach for preventing the dispersion of infectious disease in a meeting room

Ahmadzadeh

Shams

2022

Preprint

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Airborne transmission of respiratory aerosols carrying infectious viruses has generated many concerns about cross-contamination risks, particularly in indoor environments. The study addresses the emitted viral particles during coughing from the infected person and their transport dynamics inside the safe social distance meeting room. CFD based on coupled Eulerian-Lagrangian techniques is used to explore the characteristics of the airflow field in the domain. The main objective of this study is to investigate the effects of the number of open and closed windows, exhaust layouts, and location of the air conditioner systems on the dispersion of the particles. The results show that opening adjacent windows of the emission source has a better performance against the exit of particles from the environment than opening the window(s) that is farthest from that. Moreover, the results demonstrated reducing the distance between the ventilation systems installed location and the ceiling can decrease the fraction of the suspended particles by over 35%, and at-risk individuals from 6 to 2 people. As well, changing the location of inputs from the back of the infected person to the front of that can raise the shelf time of the particles and their concentration rises from 4.125 to 5%, respectively.

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Examination of human interaction on indoor environmental quality variables: A case study of libraries at the University of Alberta

Cited by 19 publications

References 60 publications

Multi-objective performance assessment of HVAC systems and physical barriers on COVID-19 infection transmission in a high-speed train

Multi-objective performance assessment of HVAC systems and physical barriers on COVID-19 infection transmission in a high-speed train

A numerical approach for preventing the dispersion of infectious disease in a meeting room

A numerical approach for preventing the dispersion of infectious disease in a meeting room

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