Fire Tube Boiler Diagram

3this specification includes high pressure factory assembled packaged scotch marine horizontal wetback fire tube boilers with a minimum heating surface area of 5 square feet per boiler horsepower.

Fire tube boiler diagram. It was mainly used for steam locomotive engines. In fire tube boiler the fuel is burnt inside a furnace. A fire tube boiler is a type of boiler in which hot gases pass from a fire through one or many more tubes running through a sealed container of water. The most basic type of a package boiler is single passage three pass design.

The tubes are submerged in the boiler water and transfer the heat from the hot gases into the water. The heat of the gases is transferred through the walls of the tubes by thermal conduction heating the water and ultimately creating steam. Inside a firetube boiler the hot gases travel down the furnace during the combustion process first pass. A high pressure watertube boiler also spelled water tube and water tube is a type of boiler in which water circulates in tubes heated externally by the fire.

Fire tube boiler construction and working principle of fire tube boiler. The so called fire tube boiler is a gas produced by combustion of fuel in the fire extinguishers or smoke too header pipe fire extinguishers or smoke on the external water pipes vapor or steam mixture is heated. Fire tube boilers are useful for small demands of steam and water tube boilers are useful for industrial level usage. Operation of fire tube boiler is as simple as its construction.

Other types of high pressure fire tube boilers are readily available but are omitted from this specification. It was popular in 18th century. Fuel is burned inside the furnace creating hot gas which heats water in the steam generating tubes. One such boiler is shown in the figure.

The construction of a water tube boiler can be equipped with cylindrical shell vertical firebox in the base space for water in the center segment and space for steam in the higher segment. Most of the fire tube boilers now come in a complete packagethe main parts of the package are. Fire tube boiler is one of the most basic types of boiler and the design is also very old. Ever wonder how your boiler is creating steam.

A fire grate is located at the fire box base as well as coal is fired up on the firebox. To cut short the main purpose of boiler is to boil a liquid mostly the water in order to generate the steam for serving the purpose of heating a building or running an equipment through pressurized steam or pressurized water.