Abstract: An improved wet electrostatic precipitator (10) includes several flat collector electrodes (12) and flat discharge electrodes (14) respectively arranged between the collector electrodes. Water or another suitable rinse liquid is distributed over the operative surfaces of the collector electrodes by a liquid distribution arrangement comprising several tubular distributor members (60), each member including uniformly spaced, tubular overflow nozzles (62 and 63) that project vertically upwardly and that are individually adjustable to provide for uniform flow. The end overflow nozzles (63) that are adjacent the respective inlets (64) have closed lower ends. Each end nozzle further has a circular inlet aperture or bore (94) in its tubular wall, and each is oriented so that the aperture generally faces toward the associated distributor member inlet.

Abstract: An evaporative air conditioner is provided which includes a housing (10) having air-pervious portions (12). Wettable pads (20) are mounted within the housing (10) against the inner surface of the air-pervious portions (12) such that ambient air flowing through the air-pervious portions (12) flow through the pads (20). A suction fan (18) is mounted within the housing (10) for drawing ambient air through the air-pervious portion (12). A liquid distributor (16) is mounted above the housing (10). The distributor (16) has surfaces which slope downwrdly from the center of the distributor (16) toward the upper edges of the housing (10). The surfaces of the distributor (16) which slope toward the air-pervious portions (12) of the housing (10) include horizontal terraces (17) for distributing liquid evenly across the surfaces.