Abstract
Ultraviolet (UV) light inactivation of bacteria has been well documented; however, few practical applications use UV light as a germicidal agent for indoor air sanitation. This study is a laboratory evaluation of the germicidal efficacy of a hollow ceiling fan blade assembly containing a UV light unit through which selected aerosolized test microorganisms were passed. An experimental system was constructed to simulate the airflow through a rotating hollow fan blade, consisting of an airtight airflow system that housed the statically positioned fan blade unit containing the UV light (power intensity, 64×104 µW/cm2), a microbiological aerosol generation system, and a biological air-monitoring system with sampling ports located upstream and downstream of the UV light. Escherichia coli, Micrococcus luteus, and Bacillus subtilis were aerosolized and separately passed through the hollow UV light-fan blade assembly. Air sampling was conducted using modified all glass impingers. For a single pass (26 msec) of the...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
