④ by burning classification: room burner, cyclone furnace, fluidized bed furnace
③ According to the principle of circulation cycle classification: forced circulation: In addition to rely on the density of the working fluid is poor, mainly rely on the circulating pump to provide water cycle power DC cycle: cycle power and forced circulation as a layer of boiler (fire bed boiler)
② by structure classification: water pipe: just the opposite of the boiler (the use of the majority of water pipe boiler) natural circulation: to rely on the pipe within the working density difference to provide water cycle power
For the heating and hot water supply Power plant boilers, marine boilers, locomotive boilers, fire pipe (smoke pipe) Boiler: a tube fire or smoke, the tube is the water boiler
