downcomer

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downcomer

(ˈdaʊnˌkʌmə)
n
(Building) a pipe that connects a cistern to a WC, wash basin, etc. Also called: downcome
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Canon Hughes, chaplain to Northumbria Police and a former Coldstream Guardsman, added: "This is very personal to me as it was my regiment the Coldstream Guards who originally installed the downcomers in Cromwell's time."
Sakai, "Some Flow Characteristics of a Vertical Liquid Jet System having Downcomers," Chem.
The cells incorporate the standard coal downcomer, modified to accept the Deep Throat orifice plate, and have been divided into two sections so that the downcomers can be removed with the restrictions of limited overhead space.
The colder water flows into the inlet, down through the downcomers, and rises in the core, where it will eventually exit at the top.
"I preached in church yesterday morning about the theft and said the downcomers would be of little value to those who took them, but are of much greater value to the church.
Each of the 3 m diameter cells is divided by a baffle into two separate units, each with five downcomers. Thus each of the four units can produce a final concentrate.