hot well

noun

a tank or reservoir in which hot water is collected before being recirculated, especially condensed steam about to be returned to a boiler.

Origin of hot well

Middle English word dating back to 1350–1400

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

It is of the vertical kind, and stands on a shallow square tank, which forms the hot well.
Life of Richard Trevithick, Volume II (of 2) | Francis Trevithick
If you are carrying a vacuum equal to 27 inches of mercury, what should the temperature of the water in the hot well be?
Farm Engines and How to Run Them | James H. Stephenson
From the bottom of these cliffs, on the east bank of the river, issues the Bristol hot well water.
The Mirror of Literature, Amusement, and Instruction | Various
All steam supplied to the turbine obviously goes to swell the hot-well contents, and to thus increase the total steam consumption.
Steam Turbines | Hubert E. Collins
I got some water from the hot well; tasting o' copper and grease.
Kit Musgrave's Luck | Harold Bindloss

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