Schneider Electric It Corporation

Hussmann Corporation

Nordyne, Inc.

Jacob Joseph Rede

John H Bean, Jr

Jie Chen

David L Koesterer

Craig A Thomas

An indirect evaporative cooling system includes a frame, a heat exchanger core, a supply fan to move indoor return air inside the heat exchanger core, an exhaust fan to move air over the heat exchanger core in a direction perpendicular to the indoor return air, a water collection and management system disposed within the frame below the heat exchanger core to collect water sprayed onto the heat exchanger core, and a water spray system positioned above the heat exchanger core to supply water that is evenly distributed to a top surface of the heat exchanger core. The water spray system includes at least one water spray assembly having an enclosure with a surface, and at least two spray nozzles configured to spray water on a portion of the top surface of the heat exchanger core. Each spray nozzle is configured to produce a flat, fan-shaped spray pattern.

System and method of a water management for an indirect evaporative cooler

An indirect evaporative cooling system includes a frame, a heat exchanger core, a supply fan to move indoor return air inside the heat exchanger core, and an outdoor exhaust fan supported by the frame to draw outdoor air over the heat exchanger core in a direction perpendicular to the indoor return air. The system further includes a water spray system positioned above the heat exchanger core to spray water over the heat exchanger core, and a water collection and management system disposed below the heat exchanger core to collect water sprayed onto the heat exchanger core. The water collection and management system includes a water basin configured to contain fluid. The water basin is configured to include an operational water volume and a water reserve volume which together define a total usable water volume, and includes a water height set point to define the water reserve volume.

System and method of water management for an indirect evaporative cooler

A heat exchanger assembly including a heat exchanger that has a first end and a second end opposite the first end, and a cover coupled to the second end. The heat exchanger also includes a plurality of fins with a first fin disposed adjacent the first end and a second fin disposed adjacent the second end, and a continuous, serpentine coil. The coil includes first return bends projecting beyond the first fin and second return bends projecting beyond the second fin. The cover has a base plate and separate receptacles encasing one or more of the second return bends to permit airflow through the encased second return bends. The base plate is positioned on the second end to inhibit airflow from one of the receptacles to another of the receptacles.

Heat exchanger including coil end close-off cover

Heat pumps with improved defrost cycles and methods of defrosting heat exchangers, for example, having microchannel outdoor heat exchangers. A heat exchanger has three types of connection points that are used during a defrost cycle. Two connection points are used to deliver hot refrigerant gas to the heat exchanger and one connection point is where refrigerant exits the heat exchanger. Two of the connection points are at the same header and during at least part of the defrost cycle, at least part of the hot refrigerant gas is passed through that header without passing through any cross tubes of the heat exchanger. A defrost valve in a refrigerant conduit opens during the defrost cycle to deliver hot refrigerant gas to the connection point on the header. In a number of embodiments, the defrost valve is open only during a portion of the defrost cycle.

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Dardenne Prairie, MO, United States of America

Jacob Joseph Rede