Industrial Boilers

Industrial boilers are closed vessels that use a fuel source to heat water or generate steam for industrial heating and humidification applications. Common fuel sources include coal, electricity, natural or propane gas, oil, steam or hot water, and wood. There are two basic types of industrial boilers: fire tube boilers and water tube boilers. Fire tube boilers channel hot gases through cylindrical tubes that are surrounded by the fluid (usually water) to heat. The boiler, which is the pressure vessel, contains the fluid. By contrast, water tube boilers channel water through tubes that connect to a steam drum and a mud drum. The upper drum heats the water and generates the steam. Fire tube boilers are less expensive than water tube boilers, but are not suitable for applications that involve pressures above 2,500 psig. Water tube boilers are available in larger sizes, feature faster recovery times, and can handle pressures up to 5,000 psig. Performance specifications for industrial boilers include heat output or capacity, maximum temperature, maximum pressure, and thermal efficiency.

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