Computational Fluid Dynamics (CFD) Analysis of Ultraviolet Germicidal (UV-C) to Control the Probability of Infection due to Transmission of Airborne Pathogens
ASHRAE Transactions
; 128:340-347, 2022.
Article
in English
| ProQuest Central | ID: covidwho-1970581
ABSTRACT
The wavelength band of200-280 nm of UV-C radiation generated by the Ultraviolet Germicidal Irradiation (UVGI) system can destroy the reproduction ability of microorganisms. Severalfactors related to UVfixtures, HVAC layout, and the resulting airflow flow patterns can affect the performance of upper-room UVGI applications. With the help of Computational Fluid Dynamics (CFD) analyses, this study systematically evaluates the impact of UV-C intensities on the effectiveness of an upper room UVGI system. It shows that the addition of even a small amount of UV-C energy in the upper region of space can significantly reduce the probability of infection as predicted by the Wells-Riley model. Increasing the UV-C output shows a further reduction in the infection probability, although with a diminishing impact. A further investigation is necessary to evaluate the effect of airflow patterns on the performance of UVGI systems. These studies demonstrate that CFD analyses can help optimize the performance of UVGI systems to minimize the probability of infection in indoor spaces.
Heating, Plumbing And Refrigeration; Fixtures; Infections; Flow distribution; Ultraviolet radiation; Air flow; Airborne infection; Pathogens; Microorganisms; Turbulence models; Fluid dynamics; Severe acute respiratory syndrome coronavirus 2; Aerosols; Viruses; Mathematical models; HVAC; Dynamic tests; Office space; Computational fluid dynamics; Reynolds number; Radiation; Ventilation; Virtual offices; Risk assessment; COVID-19
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Collection:
Databases of international organizations
Database:
ProQuest Central
Language:
English
Journal:
ASHRAE Transactions
Year:
2022
Document Type:
Article
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