A controlled droplet application (CDA) nozzle has a CDA nozzle cone having a first axis of rotation in a first position and, after adjustment, a second axis of rotation in a second position orthogonal to the first. A rotationally adjustable directional shroud surrounds at least a portion of the cone, the directional shroud blocking at least a portion of a lip of the cone regardless of whether the cone is positioned in the first or second axis of rotation.

A method and system for generating and spraying massive amounts of microscopic water droplets with moderate power consumption; according to said method and system a body of water is subjected to fast rotation, and to associated centrifugal acceleration, which gives rise to strong hydrostatic pressure forcing said water to pass through dense microscopic meshes, so that from each hole in said meshes emanates a micro-jets of water; said micro-jets of water keep accelerating in the direction of centrifugal force and break up into a cloud of said microscopic droplets; forced air flow applied to said droplets pushes them out to the free atmosphere; ultrasonic cleaning, integrated into the main operational cycle, removes deposition constituents from the surface of said meshes, preventing their clogging and possible disruption of generation of said water droplets.

An apparatus for producing prills includes a hollow body rotatable about a first axis, the body having a wall rotationally symmetrical around the first axis forming an interior space, the wall including nozzles for generating jets of liquid in a radially outward direction with respect to the first axis when rotating the hollow body; a second body disposed in the hollow body forming a gap between the hollow body and the second body; a liquid inlet for supplying a flow of liquid to the gap; a rotary drive unit for driving the hollow body around the first axis; a reciprocating drive-unit for reciprocally moving the hollow body and/or second body with respect to the other body along the first axis of rotation for applying reciprocal pressure on the jets; and a coupling for enabling relative rotations between the one of the hollow body and second body and the reciprocating drive-unit.

A rotating plate misting fan (RPMF) capable of delivering cooling to industrial environments including loading bays for docked trailers, includes a rotating plate assembly configured to eliminate or minimize water collection in the environment area and a controller configured to automatically adjust a vapor rate and fan speed of the fan as a function of distance to objects in proximity to the rotating plate misting fan and psychrometric parameters.