Conceptual Design of a UVC-LED Air Purifier to Reduce Airborne Pathogen Transmission—A Feasibility Study
Fluids
; 8(4):111, 2023.
Article
Dans Anglais
| ProQuest Central | ID: covidwho-2297501
ABSTRACT
Existing indoor closed ultraviolet-C (UVC) air purifiers (UVC in a box) have faced technological challenges during the COVID-19 breakout, owing to demands of low energy consumption, high flow rates, and high kill rates at the same time. A new conceptual design of a novel UVC-LED (light-emitting diode) air purifier for a low-cost solution to mitigate airborne diseases is proposed. The concept focuses on performance and robustness. It contains a dust-filter assembly, an innovative UVC chamber, and a fan. The low-cost dust filter aims to suppress dust accumulation in the UVC chamber to ensure durability and is conceptually shown to be easily replaced while mitigating any possible contamination. The chamber includes novel turbulence-generating grids and a novel LED arrangement. The turbulent generator promotes air mixing, while the LEDs inactivate the pathogens at a high flow rate and sufficient kill rate. The conceptual design is portable and can fit into ventilation ducts. Computational fluid dynamics and UVC ray methods were used for analysis. The design produces a kill rate above 97% for COVID and tuberculosis and above 92% for influenza A at a flow rate of 100 L/s and power consumption of less than 300 W. An analysis of the dust-filter performance yields the irradiation and flow fields.
Physics--Mechanics; air purifier; UVC disinfection; fluid dynamics; airborne disease; Indoor air quality; Dust; Hydrodynamics; Air cleanliness; Severe acute respiratory syndrome coronavirus 2; Flow rates; Durability; Aerosols; Fluid flow; Air pollution; Air purification; Dust filters; Design; Power consumption; Energy consumption; Efficiency; COVID-19; High flow; Public health; Viruses; Coronaviruses; Feasibility studies; Tuberculosis; Irradiation; Disease control; Disease transmission; Pathogens; Infections; Air flow; Light emitting diodes; Influenza; Outdoor air quality; Ventilation; Chambers; Dust control; Low cost; Turbulence; Pandemics; Measles; Computational fluid dynamics; Flow velocity; India
Texte intégral:
Disponible
Collection:
Bases de données des oragnisations internationales
Base de données:
ProQuest Central
langue:
Anglais
Revue:
Fluids
Année:
2023
Type de document:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS