FIELD: heat power engineering, applicable for use of the heat of flue gases of boiler units of industrial furnaces at heating of air supplied for burning.
SUBSTANCE: the air heater has a pile of glass heat-exchanging elements made of heat-resistant low-alkaline glass reinforced by a metal screen fastened with the use of sealings between the two tube plates by bolts and placed in a body with a cover, the heat-exchanging elements are U-shaped or L-shaped and have air ducts having a rough surface of the walls, they are laid in rows on one another between the posts fastened to the supporting beams with formation of a gas conduit between each adjacent row, and are interconnected through elastic seals.
EFFECT: enhanced service reliability and economic efficiency.
2 dwg
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