vagranka, millesse suunatakse ahjust väljuvate gaaside abil ettekuumutatud õhk (vt vagranka; vrd külmpuhumisega vagranka)
a cupola operated with blast heated to well above room temperature (i.e. over 200 oC); the flue gases are used to preheat the air blast to the cupola (see: cupola; compare: cold-blast cupola)
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