dry-steam drum

dry-steam drum [¦drī ‚stēm ′drəm]

(mechanical engineering)

Pressurized chamber into which steam flows from the steam space of a boiler drum.

That portion of a two-stage furnace that extends forward of the main combustion chamber; fuel is dried and gasified therein, with combustion of gaseous products accomplished in the main chamber; the refractory walls of the Dutch oven are sometimes water-cooled.