downcomer


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downcomer

[′dau̇n‚kəm·ər]
(building construction)
(chemical engineering)
A method of conveying liquid from one tray to the one below in a bubble-tray column.
(engineering)
In an air-pollution control system, a pipe that conducts gases downward to a device that removes undesirable substances.
(mechanical engineering)
A tube in a boiler waterwall system wherein the fluid flows downward.

downcomer

1. A downspout.
2. Any pipe in which the flow is substantially vertical.

downspout, conductor, downcomer, downpipe, leader, rain leader, rainwater pipe

downspout
A vertical pipe, often of sheet metal,
References in periodicals archive ?
In a HAC downcomer, the high interfacial area between the liquid and gas phases, the high heat capacity of water and the -1,000 times greater mass flow of water relative to the gas result in a single-stage, continuous compression process that involves simultaneous work transfer to the gas and heat transfer from the gas to the water and practically leads to isothermal conditions.
The coolant is subsequently drawn into the pump hydraulics and forced radially out to the downcomer, where it flows to the bottom of the RPV cavity, turns 180 degrees and flows up into the core to complete the flow cycle.
Para las consideraciones de diseno del FBR-ARL se emplearon ecuaciones que permitieron el dimensionamiento del equipo especificando el diametro del riser y downcomer, el volumen y altura total, asi como el volumen y la altura de operacion.
We saw milli-amps of current flowing up and down the downcomer," said Brehm.
The thick line is the response of the model with four holdup terms which includes the vapour holdup while the thin line is the response of a model with two holdups, but that includes the holdup of the liquid in the downcomer.
The flooding, often caused by downcomer blockage, is one of the more readily identifiable column fault.
The COMMIX model included the cold leg entrance into the downcomer, the downcomer, the lower plenum, and the core.
Tenders are invited for Miscellaneous work in pumps In connection with Repair Maintenance Operation Fire Alarm, PA System, Wet Riser Sprinkler System and downcomer installed at Dr.
The turbulence in the Jameson Cell downcomer, however, may create a greater chance of that contact.
Atlanta, comes with a color touchscreen control and can be equipped with an integral weighed downcomer for extrusion control.
Air and water were fed together under pressure into an 80 mm diameter stainless steel downcomer pipe, producing a bubbly mixture with bubbles of initial diameter ~0.
The IHX itself, constructed of austenitic stainless steel, consists of an upper and lower tube sheet separated by straight tubes with a central downcomer for incoming intermediate sodium and a riser for outgoing intermediate sodium.