FIELD: heat power engineering.;SUBSTANCE: invention relates to heat engineering, in particular to design of a steam boiler using steam produced by it in technological processes and heat supply of industrial and rural heat-consuming objects. Steam boiler comprises furnace chamber, upper drum, lower header and heat exchange tubes, which are arranged in the form of sections along furnace chamber, sections are located parallel to each other, each section pipes are located along perimeter of furnace chamber with formation of single water space. In upper part of section are connected by adapter with drum, and in lower part – with header, extreme sections are equipped with membrane screen, side pipes of other sections are made ribbed and drum and header are connected to each other by discharge pipes located beyond combustion chamber.;EFFECT: proposed boiler increases efficiency by improving circulation.;1 cl, 13 dwg
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