Peng Xu, Noah Fisher and Shelly L. Miller Using Computational Fluid Dynamics Modeling to Evaluate the Design of Hospital Ultraviolet Germicidal Irradiation Systems for Inactivating Airborne Mycobacteria† Photochemistry and Photobiology 89
As part of their infection control strategy, hospitals use upper-room ultraviolet germicidal irradiation (UVGI) systems to inactivate airborne infectious agents. A computational fluid dynamics model was developed and applied to evaluate the design of the three hospital rooms, a patient and exam room with upper-room systems and a patient room with an exhaust duct system. One of the UVGI systems was not very effective, due to efficient ventilation design. The other two configurations were effective at inactivating airborne mycobacteria. The most effective application was the one for which the room air-exchange rate was very low.
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