Noakes C., Beggs C., Sleigh A.
Bibliographic info:
Ashrae IAQ applications - Fall 2004 - Vol 5, n° 4, p 17-20, 5 Fig, 11 Ref.

Ultraviolet germicidal irradiation (UVGI) systems are used to disinfect air, they consist in mounting shielded UVGI lamps at high level in an upper room zone, and the natural convection currents that occur in a room space carry airborne microorganisms through the UV field. This study demonstrates that the effectiveness of those systems is dependant on both the ventilation regime and the in-room air mixing.