Baltimore Aircoil Company, Inc.

Yoon K Shin

David Andrew Aaron

Preston Blay

Kevin Egolf

Gregory Adam Russell

Frank T Morrison

Ravindra Singh

Richard H Harrison

Ryan J Most

Raymond Charlton

In one aspect, a heat rejection apparatus is provided including an evaporative heat exchanger and a primary fan operable to direct first ambient air into an air inlet, cause the first ambient air to interact with the evaporative heat exchanger to produce heated air, and discharge the heated air from an air outlet. The heat rejection apparatus includes a plume abatement fan operable to direct second ambient air into contact with the heated air downstream of the evaporative heat exchanger and a controller operably coupled to the primary fan and the plume abatement fan. The controller has a plume abatement mode wherein the controller operates the plume abatement fan to cause the plume abatement fan to direct the second ambient air into contact with the heated air to cool the heated air and abate plume.

Heat rejection apparatus, plume abatement system, and method

An improved heat exchange apparatus is provided with an indirect evaporative heat exchange section enclosed in a housing and a direct evaporative heat exchange section both of which are located within the same apparatus. An internal fluid stream is passed through the internal passageways of the indirect heat exchange section. An evaporative liquid is passed across the outside of the external passageways of the indirect heat exchange section to exchange heat indirectly with the internal fluid stream. The evaporative liquid that exits the indirect evaporative heat exchange section housing then passes onto and through the direct heat exchange section. The evaporative liquid exiting the direct heat exchange section is collected in a sump and then pumped upwardly to be distributed again through the indirect heat exchange section housing. The indirect heat exchange section may be comprised of a plate type heat exchanger or a circuit tube type heat exchanger located within a housing. The indirect heat exchange housing may be in direct contact with the air moving through the direct heat exchange section, be in direct contact with the cool evaporative liquid, or both, to enhance the heat transfer from the indirect heat exchange section. Air may be pumped along with the evaporative liquid through the indirect heat exchange section to agitate and increase the velocity of evaporative fluid flowing through the indirect heat exchanger. Air may also be pumped into and through the indirect eat exchange section housing when the evaporative fluid pump is off during a dry mode of operation.

Cooling tower with direct and indirect heat exchanger

A cooling tower is provided having a heat exchange section, and a fan for moving air through the heat exchange section. A water distribution assembly provides water onto and through the heat exchange section. An air inlet section is provided through which air is drawn into the cooling tower and the heat exchange section. The air inlet section has outside edges and corners. A wall assembly is provided in the air inlet section, with the wall assembly extending from the corners of the air inlet section inwardly. The water passing through the heat exchange section enters the air inlet section, and exits to a sump beneath the air inlet section. The air inlet section is comprised of a structure having outside edges and corners, and the wall assembly is comprised of a plurality of wall panel sections. Each wall panel section has an outer edge at a corner of the air inlet section, and each wall panel section extends inwardly from the corner of the air inlet section.

Cooling tower wind wall system

Heat exchanger cassette

A cassette for use in cassette-type heat exchanger has an inlet and an outlet, and include an upper plate and a lower plate. The upper and lower plates are sealed together around an edge area of the cassette, thereby forming a flow path within the cassette between the inlet and outlet. The plates are formed with a stamped pattern that increases the surface area of the plates as compared to a flat plate surface. The pattern includes a series of weld points whereby the upper and lower plate are welded or bonded together at a point location.

Indirect heat exchanger

A cooling tower is provided having a heat exchange section. A water collection basin located above the heat exchange section. The water collection basin has a plurality of openings that allow water to be distributed downwardly onto the heat exchange section. The water collection basin openings each have a diameter of from 0.2 inch to 0.6 inch.

Cooling tower water distribution system

A fill sheet arrangement in a direct heat exchange section of a cooling tower is provided. Each fill sheet includes ridges, grooves, separators, and an air inlet louver zone itself having ridges, grooves and separators, that improve the performance of the fill sheet arrangement when installed as a direct heat exchange section of a cooling tower. The air inlet louver zone improves the air flow capabilities and performance of the direct heat exchange section by limiting the evaporative liquid from leaving the fill sheet.

Cooling tower integrated inlet louver fill

A motor mount and fan sheave assembly is provided comprising two main structural supports, with a motor mount attached to the two main structural supports such that the motor mount can slide along the two main structural supports. A motor is affixed to the motor mount, and a fan sheave affixed to the two main structural supports. A motor sheave extends from the motor, and a belt spans between the motor sheave and the fan sheave. A threaded rod passes through a receiving opening in the motor mount, such that wherein upon movement of the adjusting rod, the motor mount slides along the two main structural supports.

Cooling tower mechanical support

A fill sheet for use in a fill arrangement in a direct heat exchange section of a cooling tower is provided. Each fill sheet includes ridges, grooves, separators, that improve the performance of the fill sheet arrangement when installed as a direct heat exchange section of a cooling tower. The separators are located in minor air paths between the fill sheet to improve the air flow capabilities and performance of the direct heat exchange section.

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Ellicott City, MD, United States of America

Yoon K Shin