FIELD: mechanics.
SUBSTANCE: invention relates to drying drum intended for drying paper, cardboard, thin paper and other fibrous canvas. Drying drum comprises bearing structure and outer enclosure heated by hot fluid medium. At least one hollow chamber is arranged between bearing body and outer enclosure for fluid medium to flow there through. Aforesaid outer enclosure is, preferably, so thin that relationship (A) from material thermal conductivity and outer enclosure thickness exceeds limiting value (G) which, makes for steel 3.2 kW/m2K, for aluminium it makes 30 kW/m2K, for bronze alloys it equals 18 kW/m2K, and in the case of copper and magnesium it makes 3.4 kW/m2K and 6.1 kW/m2K, respectively.
EFFECT: increased heat flow through outer enclosure.
9 cl, 3 dwg
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