Different types germicidal UV systems:
- Direct air and surface disinfection by unshielded UV lamps, which
irradiate all air and surfaces directly exposed to the lamp.
- Direct air and surface sterilization by UV lamps with a
reflector to intensify and direct the UV light to a specific area.
- Air disinfection by enclosed UV lamps, which irradiate the air passing through the UV system moved by a fan or the natural air convection. These
units can’t be used for surface disinfection because the light is enclosed or
directed to the upper air above eye level so UV can be used in occupied rooms.
- UV water and liquid sugar disinfection by specially
designed enclosed UV systems.