Abstract: A germicidal UV chamber for use on air passing through a duct system, such as a central air system which replace one or more sections of the duct and, in essence, becomes part of the duct work. Each chamber is in the form of one or more ellipsoid sections which focus the energy uniformly throughout the chamber. The UV lamp is in the form of a helix around the center line of the chamber. Its pitch may very along its length so as to concentrate the UV radiation towards the center of the chamber. A UV transparent conduit may be positioned in the center of the coils of the helical UV lamp to convey a liquid through the lamp.

Abstract: A germicidal UV chamber for use on air passing through a duct system, such as a central air system which replace one or more sections of the duct and, in essence, becomes part of the duct work. Each chamber is in the form of one or more ellipsoid sections which focus the energy uniformly throughout the chamber. The inlet and exit passages from the chamber are a grill formed from truncated elliptical concentric rings. Also positioned in the chamber is an ultraviolet transparent conduit through which a liquid such as water passes and is also germicidally cleansed. The conduit may very in diameter to retain UV energy in the conduit.

Abstract: A germicidal UV chamber for use on air passing through a duct system, such as a central air system which replace one or more sections of the duct and, in essence, becomes part of the duct work. Each chamber is in the form of one or more ellipsoid sections which focus the energy uniformly throughout the chamber also positioned in the chamber is an ultraviolet transparent conduit through which a liquid such as water passes and is also germicidally cleansed.

Abstract: A germicidal UV chamber for use on air passing through a duct system, such as a central air system which replace one or more sections of the duct and, in essence, becomes part of the duct work. Each chamber is in the form of one or more ellipsoid sections which focus the energy uniformly throughout the chamber. A chamber is mounted at each return vent to cleanse the air from a room as it returns to the duct system. In addition, where exterior contamination is feared, outside air entering the system may also be treated. Chambers may be connected by their respective ducts in series or in parallel.

Abstract: A bioconditioning germicidal dryer for the hands and lower arms has two portals which allows the hands and forearms to be comfortably extended laterally into the chamber. The working chamber has a source of ultraviolet light with a spectral output weighted at a 253.7 nm. Air is introduced through one or more vents in a second heated chamber connected to said working chamber. Preheated air is then drawn past the ultraviolet light source, where it is germicidally cleansed, into the working chamber, and leaves the working chamber through the portals. Because of the combination of (a) ultraviolet light, (b) closed chamber environment, (c) warm air and (d) chamber geometry induced turbulent air flow patterns, the hands and arms are germicidally cleansed and gently dried without dehydration of the skin normally found in germicidal washing.