What are the classification of boilers?

The boilers may be classified as follows:

Fire-tube boiler and Water-tube boiler. Natural circulation and Forced Circulation. High Pressure and Low-Pressure boilers. Stationary and Portable boilers.

What is boiler give example?

A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central heating, boiler-based power generation, cooking, and sanitation.

What are the 2 types of boiler and explain each type?

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 are the 3 types of boiler?

The Types of Boilers found in Long Island Homes
  • 1) Gas-Fired Boilers. Gas-fired boilers are one of the most highly-efficient and durable types of boilers. …
  • 2) Oil-Fired Boilers. Oil-fired boilers are typically found in areas that have little or no access to natural gas. …
  • 3) Electric Boilers.

What are the four types of boilers?

Different Types of Boilers
  • Steam Boiler. Both hot water and steam boilers use a heat exchanger as a tool to heat water and distribute it to a piped system connected to radiators around the home. …
  • Hot Water Boiler. …
  • Natural Gas Boiler. …
  • Electric Boiler. …
  • Oil Boiler. …
  • Condensing Boiler.

What are the two classification of water tube boiler?

Babcock and Wilcox Boiler

The burning fuel will generate the hot gases that are forced in the grate to supply upward with baffle plates.

How are steam boilers classified?

(i) Internally fired boiler: In internally fired steam boilers, the furnace is located inside the boiler shell. Most of the fire tube boilers are internally fired. (ii) Externally fired boiler: In externally fired steam boilers, the furnace is arranged underneath in a brick work setting.
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How are boilers classified on the basis of firing?

According to the position of the furnace, the steam boilers are classified as internally fired boilers and externally fired boilers.

How are boiler joints classified?

There are two types of riveted joints in a cylindrical boiler shell. They are called longitudinal butt joint and circumferential lap joint. The plate of the boiler shell is bent to form the ring and the two edges of the plate are joined by a longitudinal butt joint.

What is the function of boiler and classified it?

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

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.

How many types of steam boilers are there?

There are three main types of boilers you can install into your home: combi boilers, heat only (regular boilers) and system boilers.

What is the application of boiler?

Commercial boilers are a staple for providing hot water or steam for large institutions and buildings. Applications range from space heating to manufacturing processes. With a wide range of usefulness, choosing a boiler system is a balance of desired design characteristics and efficiency ratings.

What is the efficiency of boiler?

Boiler efficiency can be defined as the ratio of the useful heat output to the total energy input. Typical boiler efficiencies range from about 90% for the best solid biomass fuel boilers to close to 95% for oil- and natural gas-fired boilers, Table 3.2.

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.

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 are boiler pressure parts?

Parts of the boiler that are subjected to high internal pressure of steam or water are referred to here aspressure parts. Tubes, drum, and headers are examples of pressure parts. Other components likes burners, etc., are not subjected to such internal pressure. As such they are classified as nonpressure parts.

What is the pH value of boiler water?

An important element of boiler feedwater treatment is controlling corrosion by keeping the boiler water slightly alkaline, between 7 and 9 on the pH scale.

What is TDS in boiler water?

Many of the impurities, or total dissolved solids (TDS), in boiler water are left behind following its evaporation into steam. These impurities can cause foaming that leads to carryover of water into the steam system and damaged boiler heating surfaces.

What is hardness in boiler water?

Most boiler systems have sodium zeolite softened or demineralized makeup water. Feedwater hardness usually ranges from 0.01 to 2.0 ppm, but even water of this purity does not provide deposit-free operation.