FIELD: heat engineering.
SUBSTANCE: invention relates to heat engineering. Water-tube boiler comprises a combustion chamber, a front and a back wall, supply and return tubes, a gas flue and a heat exchanger, formed of finned tubes arranged in a parallel position to each other. Finned tubes are welded to both walls and located along the perimeter of the combustion chamber in one row and connected in zigzag fashion by drainages to form a single water path.
EFFECT: invention is aimed at reducing the number of drains and eliminating the boiler from airlocking.
1 cl, 6 dwg
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