What are the types of marine boilers?

What are the types of marine boilers?

5 Types of Marine Boilers

  • The Water-tube Boiler.
  • The Main Propulsion Boiler.
  • The Auxiliary Boiler.
  • The Waste Heat Boiler.
  • The Composite Boiler.

What is marine boiler used for?

What is the meaning of marine boilers? Boiler is a pressure vessel used on ships in which the water is heated to evaporate and generate the steam and the unit is so arranged that the generated steam accumulated in it.

What are the two types of marine boiler?

Marine boilers are of two types such as water tube boilers and fire tube boilers. Water-tube-type boilers are used for high pressure, high temperature, high capacity applications. The main boiler design depends on its application, ie. For motor ships, a small fire-tube boiler would be satisfactory.

What is boiler in marine engineering?

A boiler is a steel pressure vessel in which water under pressure is converted into steam by the application of combustion. In other words, it is simply a heat exchanger which uses radiant heat and hot flue gases, liberated from burning fuel, to generate steam and hot water for heating and processing loads.

What are the types of a marine boiler and difference?

1) Smoke tube boilers are heavy in comparison to the water tube boilers. 2) Its efficiency is low and can only generate low or medium pressure steam. 3) Smoke tube boilers are having less efficient combustion. 4) Generally in smoke tube boilers, the threat of thermal stress is high because water circulation is poor.

What are the parts of marine boiler?

Different components or parts of a boiler

  • Steam drum. Earlie the drum of boilers were used to be made from riveting method, but now with advancement in the welding technology, drums are made with welding.
  • Water drum.
  • Headers.
  • Generating tubes.
  • Screen tubes and Water wall tubes.
  • Down comers and Riser tubes.

What are boilers and its types?

There are mainly two types of boiler – water tube boiler and fire tube boiler. In fire tube boiler, there are numbers of tubes through which hot gases are passed and water surrounds these tubes. Water tube boiler is reverse of the fire tube boiler.

What is boiler explain?

A boiler is an enclosed vessel that provides a means for combustion and transfers heat to water until it becomes hot water or steam. The hot water or steam under pressure is then usable for transferring the heat to a process. Water is useful and cheap medium for transferring heat to a process.

What is the principle of boiler?

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.

Which boiler is suitable for marine application?

Which of the following boiler suitable for marine applications?…23.

(a) Benson boiler
(b) Loeffler boiler
(c) Schmidt-Hartmann boiler
(d) Velox boiler

How do boilers work?

During operation, a valve connected to your boiler opens and gas enters into a sealed combustion chamber, an electric ignition system or permanent pilot then ignites to burn this fuel. Hot jets that are linked to a heat exchanger within the boiler transfer heat to the water that flows over the exchanger.

Which boiler is best 2020?

Top 10 best boiler brands

  • #1 Viessmann Boilers.
  • #2 Alpha Boilers.
  • #3 Ideal Boilers.
  • #4 Worcester Bosch.
  • #5 Valliant Boilers.
  • #6 Baxi Boilers.
  • #7 Glow Worm Boilers.
  • #8 Potterton Boilers.

What are the two parts of a boiler?

The combustion chamber is the component of the boiler where the fuel is burned to heat the water. The chamber contains the burners and is designed to provide a very safe area for high-temperature combustion of volatile fuel.

What are the main parts of a boiler?

The key elements of a boiler include the burner, combustion chamber, heat exchanger, exhaust stack, and controls. Boiler accessories including the flue gas economizer are also commonly used as an effective method to recover heat from a boiler.

What is the most common type of boiler used in marine vessels?

: The watertube boiler is employed for high-pressure, high-temperature, high-capacity steam applications, e.g. providing steam for main propulsion turbines or cargo pump turbines. Firetube boilers are used for auxiliary purposes to provide smaller quantities of low-pressure steam on diesel engine powered ships.

Which type of water is used in boiler?

The boiler receives the feed water, which consists of varying proportion of recovered condensed water (return water) and fresh water, which has been purified in varying degrees (make up water). The make-up water is usually natural water either in its raw state, or treated by some process before use.

Which boiler is the most energy efficient?

Top 5 Most Efficient Boilers 2021

  • Baxi Duo-tec 33 Combi ErP 28kW.
  • Vaillant EcoTec Plus 30kW.
  • Alpha E-Tec 28kW.
  • Worcester Bosch Greenstar 8000 Style 30kW.
  • Viessmann Vitodens 050-W 29kW.