RECOVERY WATER HEATER Russian patent published in 2002 - IPC

FIELD: heat power industry. SUBSTANCE: recovery water heater can find use in boiler rooms and at thermal power stations to reduce temperature of waste gases with production of hot water for auxiliary facilities. Described recovery water heater has vertical cylindrical body inside which gas conduit with holes, ring spray gun and discs are installed. Gas conduit is pneumatically coupled to by-pass via upper and lower flanges, has radial holes which diameters reduce along its height. Rings with inclined flat circular discs with concentric holes which diameters increase towards slope are attached to gas conduit on outside. Opposite ends of circular discs are mounted into rings placed on ring flanges attached to inner surface of body. Ring spray gun put on lid of gas conduit on gusset plates communicates hydraulically with water supply system via pipe-line. Effective heat exchange takes place in such water heater thanks to opposite flow of hot gases and cold water. EFFECT: effective recovery of heat of waste gases for water heating. 2 cl, 2 dwg