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Numerical Investigation of Thermal Comfort and Transport of Expiratory Contaminants in a Ventilated Office with an Air Curtain System by Dong Yoon Park; Seongju Chang is a Environmental Science article available to read on EtoBox.

What is Numerical Investigation of Thermal Comfort and Transport of Expiratory Contaminants in a Ventilated Office with an Air Curtain System about?

Air distribution systems generally focus on diluting contaminants and distributing conditioned air. However, this strategy has a potential for spreading particulate matter or bioaerosols. Thus, it is considered to be useful to create a non-uniform indoor environment to prevent such dispersion of particulate matter or bioaerosols, and an air curtain could serve for this purpose. This study investigates the effects of an air curtain system in a ventilated office to prevent the dispersion of expiratory droplets that are generated locally, while also considering thermal comfort. Droplets dispersion was modelled with computational fluid dynamics (CFD) with the Lagrangian method. In the CFD simulations, an air curtain system was installed in the middle of an office with varied factors of design, orientation and jet velocity of the air curtain system. Numerical results showed that unless there was an independent inlet and outlet for each region, the air curtain system alone could not create a non-uniform thermal environment; however, it was effective in removing and preventing dispersion of the expiratory droplets. The droplet removal performance of an air curtain system was not proportio

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Author

Dong Yoon Park; Seongju Chang

Publisher

SAGE Publications

Published

2018

Language

EN

Field

Environmental Science (Physical Sciences)