摘要:
A steam generator including a steam chamber defining an enclosed fluid chamber with a plurality of tubes passing through the steam chamber, a combustion chamber defining a closed fluid chamber and an air channel coupled to a burner, and a heat transfer section defining a closed fluid chamber and an air passage in fluid communication with a vacuum source, in which the burner generates a heated air mixture, the vacuum source draws the heated air mixture from the combustion chamber air channel, through the steam chamber plurality of tubes and through the heat transfer section air passage so as to heat fluid passing through the heat transfer section, the steam chamber and the combustion chamber fluid chamber.
摘要:
A boiler firebox comprises arcuate front and rear end water walls connected respectively to front and rear ends of right and left side water walls. The end walls curve outward from respective ends of one side water wall and then inward to the respective ends of the other side water wall. The end and side water walls enclose a combustion chamber, and are connected at ends thereof such that water can circulate through the end and side water walls. Water input ports can be provided in water walls on opposite sides or ends of the firebox such that the flow of circulating water can be divided with about half entering the water wall on one side or end of the boiler and the other half entering on an opposite side or end, thereby reducing temperature variations in water near the input ports compared to boilers with a single input port.
摘要:
A boiler having a hot gas generator for burning liquid or gaseous fuels. The hot gas generator comprises a combustion chamber unit, into the combustion chamber of which the fuel and air for combustion are introduced and in which the combustion of the fuel takes place. The combustion gases are conveyed out of the combustion chamber into a water cooled boiler firebox. A compressor supplies the air for combustion into the combustion chamber unit. A flue gas conduit, which leads to the flue gas vent of the boiler, at its inlet end, which is connected with the boiler firebox, is connected with the air intake of the compressor of the hot gas generator for recirculating a regulatable amount of flue gases into the combustion chamber unit of the hot gas generator. The flue gas conduit offers a resistance to the flow of flue gas therein, which resistance is greater than the chimney draft force present in the flue gas vent of the boiler.