What are the parts of fire tube boiler and its functions?

What are the parts of fire tube boiler and its functions?

A locomotive boiler has three main components: a double-walled firebox; a horizontal, cylindrical “boiler barrel” containing a large number of small flue-tubes; and a smokebox with chimney, for the exhaust gases. The boiler barrel contains larger flue-tubes to carry the superheater elements, where present.

What is fire tube boiler PDF?

FIRE TUBE BOILER. In fire tube steam boilers, the flames and hot gases produced by the combustion of. fuel pass through the tubes (called multi tubes) which are surrounded by water. The heat is conducted through the walls of the tube from the hot gases through. the surrounding water.

What is boiler PDF?

A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam. The steam produced may be supplied at low pressure for industrial process work in cotton mills, sugar industries etc.

What are the functions of a boiler?

The function of a boiler is to either produce hot water or steam. Hot water boilers heat water for the purpose of domestic or commercial heating and hot water supply. Steam boilers generate steam in order to power turbines for power generation and various other industrial heating applications.

What is the principle of fire tube boiler?

A fire-tube boiler is a type of boiler in which hot gases from a fire pass through one or more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam.

What are the four types of fire tube boiler?

Types of Fire Tube Boilers

• Cornish boiler.
• Lancashire boiler.
• Locomotive boiler.
• Scotch marine boiler.
• Admiralty-type direct tube boiler.
• Horizontal return tubular boiler.
• Immersion fired boiler.
• Vertical fire-tube boiler.

What is boiler function?

What is boiler principle?

Working Principle of Boiler Hot gases are produced by burning fuel in the furnace. These hot gases are made to come in contact with the water vessel where the heat transfer takes place between the water and the steam. Therefore, the basic principle of the boiler is to convert water into steam by using heat energy.

What is preheater in boiler?

Air Pre-heaters are basically heat-exchangers installed in the exit flus gas duct of the boiler. The purpose of the air preheater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas.

What is the function of safety valves in the boiler?

In steam systems, safety valves are typically used for boiler overpressure protection and other applications such as downstream of pressure reducing controls. Although their primary role is for safety, safety valves are also used in process operations to prevent product damage due to excess pressure.

What is economizer in boiler?

Economizers are heat exchangers that transfer the heat in the flue gas to another medium‚ generally the boiler feed-water‚ although other streams are sometimes used such as make-up water. There are 2 types of economizers: non-condensing and condensing.

What is economizer system?

An economizer is a part of a building’s cooling system that uses cool outdoor air to cool the building instead of operating the air conditioning compressor. An economizer is an add-on feature to an HVAC air handler that draws in outdoor air and mixes it with return air from indoors.