Boiler types and classification pdf
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Examples of water-tube boilers are, Babcock andWilcox boiler Stirling boiler La-Mont boiler Benson boiler Yarrow boiler Loeffler boiler etc/15firetube boilers, but other designs such as cast iron, coil-type, and tubeless (steel shell) boilers are also produced. The drum is placed above the heat source. This definition is extremely broad and the project team will need to narrow down the specific type of boiler that will be required. Boiler classifications The most basic definition of a boiler is a closed vessel in which water is heated until the water has reached the desired pressure and temperature. This article covers the basic difference between common boiler types for high pressure steam applications in the capacity range of 5,, to,, Btu/hr (MMBTU/hr orHP) Superheater—tubes located near the boiler outlet that increase (superheat) the temperature of the steam, pWaste heat boiler—a device that uses waste heat from a process to produce steam, pWater tube boiler—a type of boiler that contains water-filled tubes that allow water to circulate through a heated firebox, p. Some of the water-level safety devices described in the chapter are: water columns, gage glasses, and low-water cutoffs These have higher efficiencies than fire tube boilers. (Refer Figure). Boiler classifications The most basic definition of a boiler is a closed vessel in which water is heated until the water has reached the desired pressure and temperature. (b) Medium Pressure Boilers. The cooler water goes to the inclined tubes and the water 20/Water-tube Boiler A water-tube boiler is a type of boiler in which water circulates in tubes, which are heated externally by the fire. (c) High-Pressure boilers. According to ASME there every boiler have a pressure abovePSI is called a high-pressure boiler. Water-tube boilers are used for high-pressure boilers. This definition is extremely broad and the project team will need to narrow down the specific Boiler types According to steam Pressure. (a) Low-pressure Boilers. Additional details about ICI boilers and their design, construction, and operation are available from other sources.3,5ŒFiretube Boilers BOILER TYPES FOR STEAM APPLICATIONS. but generally, Low-pressure boilers have 6, · Boilers can be classified as packaged or field erected, high or low pressure; other classifications including fire tube, water tube, cast iron, steam generators, and low-water-volume hydronic types. Depending on layout boilers can also be classified asLongitudinal drum boiler: The feedwater is feed in drum. Descriptions of some of the more typical boiler designs are presented below. Fire Some manufacturers use Boiler Types and Classifications There are virtually infinite numbers of boiler designs but generally they fit into one of two cat-egories: Fire tubeor “fire in tube” boilers; contain long steel tubes through which the hot gasses from a furnace pass and around which the water to be converted to steam cir-culates.