Abstract: A compact heat exchanger efficiently and cost-effectively exchanges heat from one gas stream to another through counter flow channels between parallel plates. Foam strips are incorporated to form the sides of the flow channels that allow channeling and directing the flow of air on each side of a plate heat transfer surface in patterns to maximize the heat exchanger's effectiveness and maintain the gap between heat transfer plates and form the pressure boundary at the edge of the heat exchanger. Clips are incorporated in strategic locations of each plate to locate and mechanically connect the plates to one another and to maintain the location of the foam strips. The heat transfer of the heat exchange surfaces are enhanced using rounded dimples and protrusions arranged such that these occur on the top and bottom of the flow channels.

Abstract: This invention is an integrated system comprised of a flat plate, air-to-air heat exchanger, ducting and controls, and an AZFlow™ direct evaporative cooler in configurations where the system is able to provide air that has been cooled well below the ambient wet-bulb to temperatures approaching the dew point. These include: A) a two stage cooler where one evaporative cooler performs the stage one cooling by direct evaporative cooling, of the ambient air.

Abstract: An evaporative cooler, including one or more media, distributes water from a source of water to each media through a constant flow valve. A distribution unit at each media includes a pair of spray bars for spraying water through two rows of uniformly spaced apertures disposed in each spray bar. A spray bar channel associated with each spray bar distributes the streams of water impinging thereupon from one row of apertures to the underlying media in specific locations. A distribution cap associated with each spray bar distributes streams of water impinging thereupon to the front and back edges of the underlying media. The water dripping from the media is drained. A fan or other air moving device draws air through the media to obtain cooled air resulting from evaporation of water flowing downwardly along the media.

Abstract: An evaporative cooler includes an arrangement of a combination of fluid components including flow control valves, spray bars, spray bar orifices, spray bar distribution channels, and distribution caps that produce a water application profile on the media that is adjusted to match the heat load introduced to the media by the air to be evaporatively cooled. The water evaporation rate is a direct function of this heat load profile. Applying water in this profile takes advantage of the wicking rate and flow through time constant of evaporative cooling media to effectively distribute the water through the media. This results in a once through system that allows the volume of water being applied be the lowered such that water not evaporated and exiting the media is limited and does so at very high cycles of concentration while maintaining high levels of cooling effectiveness and scale free media.

Abstract: An evaporative cooler, including one or more media, distributes water from a source of water to each media through a constant flow valve. A distribution unit at each media includes a pair of spray bars for spraying water through two rows of uniformly spaced apertures disposed in each spray bar. A spray bar channel associated with each spray bar distributes the streams of water impinging thereupon from one row of apertures to the underlying media in specific locations. A distribution cap associated with each spray bar distributes streams of water impinging thereupon to the front and back edges of the underlying media. The water dripping from the media is drained. A fan or other air moving device draws air through the media to obtain cooled air resulting from evaporation of water flowing downwardly along the media.