HOT-WATER BOILER Russian patent published in 2003 - IPC

FIELD: power engineering. SUBSTANCE: invention can be used for heating of water. proposed hot-water boiler contains front, rear, ceiling and side walls made of pipes with fins and connected to corresponding headers. Side walls are made of outer solid panel and inner panels. Boiler is installed on base and is provided with inner wall arranged in furnace space and forming additional gas pass together with ceiling wall. Openings are made in upper and lower parts of inner panels of side walls which are furnished with partitions. openings of upper part of side wall panels in direction of flue gas flow communicate with additional gas pass, and inner wall and side faces of base are made in form of gastight tube panels. EFFECT: improved efficiency of hot-water boiler in operation. 5 dwg