Engineering Strategies for Airborne Diseases

H V A C S Y S T E M S T R A T E G I E S

AIR DISINFECTION – ULTRAVIOLET GERMICIDAL IRRADIATION (UVGI)

Ultraviolet germicidal irradiation (UVGI) uses short-wave ultraviolet (UVC – 100 to 280nm) energy to inactivate viral, bacterial, and fungal organisms so they are unable to replicate and potentially cause disease. In short, UVGI does not kill viruses, it just deactivates them. • UVGI system is a cost-effective and a flexible solution. • Can be placed within ducts, Air Handling Units (AHU), plenum spaces, or in rooms above occupied areas. • Low electrical consumption if installed centrally within a unit-- approximately 2-3 kw for a 100k sf office building. • Ideal conditions are 200-400 fpm air velocity & 80-95F ambient air- dry bulb temperature.