A marine boiler is a closed pressure vessel used on ships whereby water is heated then steam is generated and the unit is so arranged that the generated steam accumulates in it. It provides heating to the main diesel propulsion engine, to the bunker FO tanks, so as to reduce the viscous nature for easy ignition and transfer purposes. A boiler is an important component of any ship irrespective of the kind of propulsion.
How a Marine Boiler Works
A boiler has a simple arrangement of internal components. The main function of the marine boiler is to produce steam at high pressure. Feed water that is introduced to the drum of the boiler uses heat energy from burnt fuel. The heat energy from burning fuel is then store as steam at high pressure and temperature. The fuel burns in a chamber in the boiler. Air is introduced in the combustion chamber so as to achieve complete combustion and high efficiency. The air is introduced through a different arrangement. Heat produced in the chamber is then transmitted to the water fro the drum via an expansive surface area that ensures high energy transmission rate.
Energy produced from the burning fuel has other uses as well. The two main uses are;
- heating the feed water so as to generate steam
- superheating steam emanating from the boiler drum
Types of Marine Boilers
Boilers from GIANTECH are of two major types: water tube and fire tube boilers. The two differ in terms of arrangement and design.
Water tube boiler
In a water tube boiler, water is passed though lines of tube where it is heated by the use of a furnace and a burner.
Fire tube boiler
In a fire tube boiler, hot gases pass through tubes that are surrounded by the feed water.
It is important to know how a marine boiler operates.