Abstract: An air humidification system for the humidification of a zone includes supply ducts and return ducts extending from a first air handler. A second air handler has an enclosure sized to form a fog absorption region with a cross-sectional area that is greater than the cross-sectional area of the air conditioning ducting coupled to the zone. The enclosure has an intake and a discharge through which air passes. A compressor associated with the second air handler provides pressurized air for the generation of the fog for humidification. A fogger has a water input coupled to the pressurized water supply, an air input coupled to the pressurized air supply from the compressor, and a discharge port from which fog is produced. A humidification control is interposed between the supplies of pressurized air from the compressor and water to the fogger in the enclosure to produce fog from the fogger inside the second air handier when the humidification in the zone is below a desired set point.

Abstract: A system for regulating the amount of fog produced by foggers in a humidification system in which a control signal calling for a certain amount of humidification from foggers is used and wherein the foggers require pressurized air and water to produce fog for an air stream. The pressure differential between the air and water to the foggers is varied according to the amount of required humidification. The pressure differential may be regulated with a pneumatic device or with an electronic control.

Abstract: A system for humidifying an air stream comprising an array of fogger nozzles supplied with air and water by a grid of supply tubes, feedback means connected to the grid of air supply tubes and coupled to the pressure regulating means for the air and water supply tubes, for establishing a predetermined pressure differential between the grids of air and water supply tubes.

Abstract: A method and apparatus are described to evaporatively cool air leading to a gas turbine engine by injecting water fog into the inlet air in a controlled manner. A signal is generated representative of the capacity of the inlet air stream to absorb water vapor and used to regulate the amount of fog introduced into the inlet air stream.

Abstract: A method and system are described to remove solvent vapors emanating from a source in a work place. The air stream is passed through a fogging chamber in which a plurality of ultrasonic foggers are used to create a supersaturated condition in the form of vapor and droplets of a scrubbing liquid such as water. The supersaturated condition is accompanied with a large amount of turbulence and mixing flows throughout the chamber to reduce the ability of solvent vapors from bypassing contact with the scrubbing liquid. The scrubbing liquid droplets and vapor are then condensed out in a cooling condenser and collected to leave a scrubbed air stream from which a substantial amount of the solvent vapors is removed. The scrubbed cooled air stream may then be recirculated for reuse in the work place. Several embodiments are shown and described including a scrubbing system in which several fogging chambers and condensers are used in tandem for an enhanced removal of solvent vapor from the air stream.