A liquid collection trough assembly for a cooling tower, condenser or dephlegmator includes a plurality of elongate troughs and associated inclined capture plates arranged to receive liquid on a front face thereof and direct the liquid into an associated elongate trough. Each capture plate has a generally upright deflection plate extending downwards from an upper region on its rear face so as to be capable of receiving liquid droplets contacting it and directing such liquid into or onto an adjacent trough or capture plate, in use. The deflection plate extends downwards to terminate in a bottom edge that is located downwards of the upper region of the capture plate and spaced rearwards of the rear face of an inclined portion of the capture plate.

There is provided an aerosol generating system configured to heat an aerosol-forming substrate, the system including an aerosol generating device and a cartridge, a vaporizer configured to heat the aerosol-forming substrate to form an aerosol, at least one air inlet and at least one air outlet. The air inlet and the air outlet are arranged so as to define an air flow route between the air inlet and the air outlet. The aerosol generating system further includes a flow control configured to adjust a size of the at least one air inlet, so as to control an air flow speed in the air flow route.

A lean absorbent liquid supplier, disposed inside at an upper portion in the absorption tower housing, supplies a lean absorbent liquid into the housing. An absorption tower rectifier, disposed under the lean absorbent liquid supplier in the absorption tower housing, rectifies flow of the lean absorbent liquid supplied downwardly in the absorption tower housing, and dissolves an object gas in the lean absorbent liquid to generate a rich absorbent liquid. An absorbent liquid chamber, disposed below the absorption tower rectifier in the absorption tower housing temporarily stores the rich absorbent liquid therein. An absorption separator is disposed between the absorption tower rectifier and the absorbent liquid chamber in the absorption tower housing. The object gas is supplied to the absorbent liquid chamber.

A device for dissolving a gas in a liquid is provided, the device comprising a device body, the device body comprising a liquid inlet; a liquid outlet; a plurality of substantially conical dissolving chambers located between the liquid inlet and the liquid outlet. The device may comprise a plurality of chamber connectors of or connected with the dissolving chambers. Each of the plurality of conical dissolving chambers may comprise a wider end towards the liquid outlet, the wider end comprising a chamber outlet for flow of liquid out of the dissolving chamber; and a narrower end towards the liquid inlet, the narrower end comprising a chamber inlet for flow of liquid into the dissolving chamber. The plurality of chamber connectors may define a substantially longitudinally straight passage extending through the plurality of dissolving chambers. Also provided is a related method of dissolving a gas in a liquid.

A tray assembly for improved gas/liquid contact in a chemical process tower includes a tray deck and a downcomer. A mixer is provided in the top of the downcomer and a distributor is attached to a floor of the downcomer. The mixer includes at least one mixing baffle parallel to an outlet weir on the tray. The distributor includes a plurality of spaced apart flow directing plates extending downwardly toward and spaced apart from the floor of the downcomer. In combination, the mixer and distributor effect even liquid flow across the surface of a subjacent tray deck.

A staged dry out process and control system for an evaporative media cooling system having a plurality of media stages that are selectively activated and deactivated by a control system is disclosed. The staged dry out process ensures that wet media stages are appropriately dried with minimal disruption to the staging strategy implemented by the control system. In one aspect, the staged dry out process monitors deactivated media stages to determine if the media stages reach a dry state before being activated. In another aspect, the staged dry out process locks out a media stage that has been in a wet state beyond a predetermined maximum time limit until the media stage attains a dry state. With this strategy the cooling system can operate without being required to completely shut down for a drying process.

A cycles of concentration (COC) control process and system for an evaporative media cooling system having a water storage tank in fluid communication with a drain valve and a refill valve is disclosed. In one step, the COC control process includes the step of executing a plurality of discrete refill events to maintain a level or volume of water within the storage tank. In another step, the COC control process includes the step of executing a discrete drain event, equaling the volume of a refill event, after a discrete refill event has been executed when necessary to maintain a target cycles of concentration value of the water within the storage tank. In one embodiment, a discrete drain event is executed when the number of refill events is greater than or equals a target cycles of concentration of the water in the storage tank.

Condensing apparatuses and their use in various heat and mass exchange systems are generally described. The condensing apparatuses, such as bubble column condensers, may employ a heat exchanger positioned external to the condensing vessel to remove heat from a bubble column condenser outlet stream to produce a heat exchanger outlet stream. In certain cases, the condensing apparatus may also include a cooling device positioned external to the vessel configured and positioned to remove heat from the heat exchanger outlet stream to produce a cooling device outlet stream. The condensing apparatus may be configured to include various internal features, such as a vapor distribution region and/or a plurality of liquid flow control weirs and/or chambers within the apparatus having an aspect ratio of at least 1.5. A condensing apparatus may be coupled with a humidifier to form part of a desalination system, in certain cases.

The present invention relates to a chimney tray (3) for a column (1) for thermal treatment of fluid mixtures, comprising a collecting tray (4) and at least two chimneys (5-1, 5-2) spaced apart horizontally in the collecting tray (4), where each chimney (5-1, 5-2) forms a vertically aligned chimney body (6-1, 6-2) which forms a passage orifice (7-1, 7-2) through the collecting tray (4), and has a cover unit (8-1, 8-2) arranged spaced apart from the chimney body (6-1, 6-2), and where the cover unit (8-1, 8-2) covers the respective passage orifices (7-1, 7-2) in the vertical direction. The chimney tray (3) of the invention is characterized by a screen (9) which extends around the chimney body (6-1) of a first chimney (5-1), with the lower annular edge (14) of the screen (9) below the upper edge (13) of the chimney body (6-1) of the first chimney (5-1) and the upper annular edge (11) of the screen (9) above the lower outer edge (12) of the cover unit (8-1) of the first chimney (5-1) or adjoining the lower outer edge (12) of the cover unit (8-1) of the first chimney (5-1).

A liquid distribution device for fluid cooling devices particularly for cooling towers comprises at least one primary distribution pipe or at least one primary distribution trough, wherein a plurality of secondary distribution pipes are connected to the at least one primary distribution pipe or the at least one primary distribution trough, wherein the secondary distribution pipes are provided with nozzles, wherein the secondary distribution pipes at least section-wise have an angular cross-section and are formed from a fiber reinforced plastic.