Definition of downcomer

  1. :  a pipe to conduct something downward: such as a :  a pipe for leading the hot gases from the top of a blast furnace downward to the dust collectors and flue system b :  a tube larger in diameter than the water tubes in some watertube boilers to conduct water from each top drum to a bottom drum under the influence of thermal circulation

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Origin and Etymology of downcomer

2down + comer

Seen and Heard

What made you want to look up downcomer? Please tell us where you read or heard it (including the quote, if possible).


feeling or affected by lethargy

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