How It Works

Air Disinfection

UVGI's use in air disinfection dates back to to the 1940's where it was used to control the spread of tuberculosis in hospitals. Today UVGI air disinfection has evolved to include sophisticated systems that disinfect air for residences, hospitals, commercial and industrial buildings, and public facilities such as airports. The types of UVGI air disinfection systems in use today include single room recirculation units that are mobile or wall mounted, and in duct mounted systems for heating, ventilation and air conditioning (HVAC) systems.

Building air disinfection UVGI systems are commonly located in the air handling unit (AHU) of a room or building. The AHU is the heart of the HVAC system and typically houses the blower, heating and/or cooling coils, inlet air plenum and outlet air plenum to the building ductwork. AHUs vary in size from small room devices called terminal units to large commercial systems called roof top units. UVGI applications to disinfect moving air streams are commonly called "kill on the fly" where microbes traveling with the air stream are deactivated. Proper design of a UVGI air disinfection system depends on many factors including air flow, temperature, type and size of HVAC equipment, UV lamp intensity, plenum reflectivity and target microbe.

UVDI's sophisticated computer modeling program called V-Smart is necessary to design an efficient yet effective system for disinfecting air streams. When implemented correctly, UVGI has a proven track record of disinfecting air and protecting building occupants from air borne infection.