CONTACT SURFACE WATER HEATER Russian patent published in 1994 - IPC

FIELD: heat power engineering. SUBSTANCE: arranged in tiers in vertical housing 1 are: nozzle with water distributor, above-furnace disk 11 and furnace 2 with flue tube 3 embraced with water jacket 4. Condensate receiver 13 is located between nozzle and disk 11 which is brought in communication with water jacket 4 by means of hot water tubes 12 arranged in fire tube 3. Lower portion of water jacket 4 is connected to water distributor by means of pipe line equipped with pump. Water jacket is provided with spiral heat exchanger 5. Receiver 13 is connected to the inlet of pump 15 and heating medium line of heat exchanger 15 is connected to the pipe line laid between pump 15 and water distributor. Sludge remover 17 is fitted at the inlet of pump 15. EFFECT: enhanced efficiency. 2 cl, 1 dwg