A locomotive boiler is a device which is used to create steam from water by using heat energy. It is a horizontal drum axis, multi-tubular, natural circulation, artificial draft, forced circulation, mobile, medium pressure, solid fuel fired fire tube boiler that has an internal fire furnace.
Tube Expanding is the art of reducing a tube wall by compressing the O.D. of the tube against a fixed container, such as rolling tubes into tube sheets, drums, ferrules or flanges. To assure a proper tube joint, the tube wall must be reduced by a predetermined percentage.
There are two primary Firetube boiler designs: "wetback" and "dryback". The basic difference between a wetback boiler and a dryback boiler is in the rear wall design. The wetback boiler has a rear wall that is surrounded by water, while the rear wall of a dryback boiler is lined with refractory.
Fire tube boiler: In this types of boiler water flow surrounding the tubes and the hot flue gases flow through the tubes. The heat passes form the tube to surrounding water which is used to heat the surrounding flowing water and convert it into steam.
The water tube boiler can also handle higher pressure in applications that require more than 350 psi, unlike the fire tube boiler, which has greater pressure limitations. The physical size of a water tube boiler unit can often be a deciding factor when choosing between a water tube or fire tube boiler, because these types of commercial boilers
Water Tube Boiler atau Boiler Pipa Air. Water tube boiler memiliki karakteristik yang hampir sama dengan Fire tube boiler, jika pada Fire tube boiler itu hanya mampu menyimpan tekanan steam rendah sedangkan pada Water tube boiler mampu menghasilkan kapasitas dan tekanan steam yang tinggi.
Our two-pass, three-pass or four-pass Scotch Marine(Fire Tube) boilers are available in dryback, wetback, steam or hot water versions; from 15 to 800 hp with pressures to 300 psig. Hurst Scotch Marine boilers are rated to 81% minimum efficiency.
The difference between water tube boiler and fire tube boiler is from the boiler structure, Water tube boiler is which the have lots of tubes in boilers, the water go through from tubes. Fire tube as its name implies , the fire gas go through inside of pipes. The details difference between water tube boiler and fire tube boiler as below:
Introduction. WNS series horizontal internal combustion boiler is classic 3-pass wetback oil/gas fired boiler. After fuel is atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, called 1st pass; the high temperature flue gasses are collected in reversal chamber and then enter 2nd pass, which is grooved tube bundle area through heat convection, air
The boiler consists of a shell, a tube sheet on each end of the shell, and tubes connecting the two tube sheets. The boiler is mounted above a steel or masonry furnace. The products of combustion leave the furnace and are directed through the tubes at one end of the boiler. After passing through the tubes, the products of combustion exit the
Fire-tube boiler: This is a boiler in which the fire or hot gas is present inside the tubes and water surrounds these fire tubes.; Since fire is inside the tubes and hence it is named as fire tube boiler.The heat from the hot gases is conducted through the walls of the tube to the water.
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Thus, in this article, we have learned what is a fire tube boiler, different mountings, and accessories used for its operation, different types of fire tube boilers, advantages, and disadvantages. Here is a question for the readers, Explain the contrast between a fire tube boiler and a water tube boiler.
Fire tube boiler vs Water tube boiler. Boiler is a closed vessel used to produce steam. Industrial boilers mainly can be classified as a fire tube and water tube boilers. The difference between fire tube boiler and water tube boiler depends on many factors.
For more on Boiler Selection Firetube. Non-condensing firetube boilers are available for low- or high-pressure steam, or for hot water applications. Typically used for applications ranging from 15 to 2,200 horsepower, a firetube boiler uses a cylindrical vessel, with the flame in the furnace and the combustion gases inside the tubes.
Inspection and Test Plan for Water Tube Boiler You may also want to review boiler inspection and water tube boiler inspection procedure /instruction articles. The ASME Code Section I requirements are normally applied for the inspection and test plan in a manufacturing shop.
Firetube boilers have easy access to the boiler's firesides and tubes can easily be replaced without additional repair of the boiler. Although firetube boilers are smaller in design, they have a larger water volume than similar size watertube boilers, causing them to take longer to bring up to operating temperature from a cold start.
The water flows through the smaller diameter boiler tubes while the combustion gases travel around them to transfer heat to the water. The boiler tubes in the watertube design carry the heated water inside the tubes between the lower drum (mud drum) and upper drums (steam drum), with the generated steam accumulating in the upper drum.
Water-tube boilers differ from shell type boilers in that the water is circulated inside the tubes, with the heat source surrounding them. Referring back to the equation for hoop stress (Equation 3.2.1), it is easy to see that because the tube diameter is significantly smaller, much higher pressures can be tolerated for the same stress.
Fire tube boiler—a device that passes hot combustion gases through the tubes to heat water on the shell side, p. 298. Igniter—a device (similar to a spark plug) that automatically ignites the flammable air and fuel mixture at the tip of the burner, p. 292. Impeller—a fixed, vaned device that causes the air/fuel mixture to swirl above the
Boiler Tubes are metal tubes located inside of boilers that heat water in order to produce steam. There are two major types of tube boilers: water-tube boilers and fire-tube boilers. In water-tube boilers, water circulates inside the tubes and is heated externally by hot gases generated by the furnace.
1 Boiler is Water Tube Boiler and another one is Fire Tube Boiler. We need to replace the Tube bundles of both the above Boilers. Can any one suggest the thumb rule in costing and the difference in costing for both WT as well as FT Boiler. Same MOC of Tubes, Tube Sheets can be assumed for both the Boilers.
Water Tube vs Fire Tube. Water Tube. Advantages. The water volume in a water-tube boiler is significantly less than what would be present in a fire tube boiler. This means that there is faster response available to adapt to varying temperature conditions, i.e. swing loads. To be noted, this accounts for wider capabilities in output ranges as well.
For this type boiler heat passes through the boiler drum or tube. For this reason, the Heating Surface of the Fire Tube Boiler is less than Water Tube Boiler. Fire Tube Boiler generates less steam than Water Tube Boiler. Some experiments found that a Fire Tube Boiler can generate 18000 pounds (8164 Kg) steam per hour.
Types of Marine Boilers and Difference Between Water Tube and Smoke Tube Boilers. Marine Refrigeration, Cargo Ventilation, Noise, and Vibrations Questions Bank. 3 Replies to " What are the Different Components or Parts of a Boiler " Michael Kimbley says: December 4, 2014 at 9:02 am
2.Fire Tube and Water Tube In the fire boilers, the hot gases are inside the tubes and the water surrounds the tubes. Examples: Cochran, Lancashire and Locomotive boilers.
interconnecting bent water tubes. The hot combustion gases used to heat the water circulate outside these tubes. All of this is contained in a large, insulated, and sometimes gas tight enclosure. Firetube boilers contain the combustion gases in straight tubes and the combustion chamber while the water and steam circulate outside these tubes.
Since fire is inside the tubes and hence it is named as fire tube boiler. The heat from the hot gases is conducted through the walls of the tube to the water. The examples of the fire tube boiler are: simple vertical boiler, Cochran boiler, Lancashire boiler, Cornish boiler, Locomotive boiler, Scotch marine boiler and Velcon boiler. (ii). Water
Comparison between Fire tube and Water tube boilers A boiler is a device used to generate s team at a desired pressure and tem pe rature by transferring heat energy produced by burning fu el to water to change it to steam.
distinguish water tube from fire tube boiler; distinguish water tube from fire tube boiler. WNS series gas-fired (oil-fired) steam boiler. Product thermal capacity:1-20 t/h. Working pressure: 0.7-2 Mpa. Read More. Difference between Fire Tube Boiler and Water Tube Boiler
Conversely, in a water tube boiler the water is inside the tubes and the heat source is on the outside. This ability for rapid heat transfer makes water-tube setups ideal for applications with variable load requirements and high pressure demands. Water tube boilers are available in significantly larger capacities than fire-tube style models.
One thought on " what are difference between Water tube boiler & Fire tube boiler? Competitive Exam Questions for Mechanical Engineers - Mechanical Engineering says: February 8, 2016 at 10:34 PM
Before Understand that why Water tube boiler are more preferred, we have to know something about Water tube boiler and Fire tube boiler. The boiler is divided into two main types. One is known as fire tube boiler and the other one is known as wate
Fin tube boilers represent one of a number of pressurized equipment options used to heat water or convert water into steam under controlled conditions. As in a water tube boiler, water passes through boiler tubes while combustion gases remain in the shell side, passing over the tube surfaces.
Cost of boiler tube failures 9/4/2013 Steag O&M Company 7 The cost of boiler tube failures is comprised of three main components; the cost of the repair, the cost of start up oil to return unit to service, and the cost of lost production. A rule of thumb for repair costs of 200000 per day out of service+ cost of material
Fire Tube Boiler - Definition, Construction, Working . Difference between Fire Tube Boiler and Water Tube Boiler. The comparison between two boilers namely water tube as well as fire tube mainly includes working pressure, material type, the rate of steam production, the requirement of floor area, efficiency, load handling variation, design, operator skills, the cost for maintenance are
Fire tube boiler vs water tube boiler. Today's lessons will be discussed about difference between fire tube boiler and water tube boiler that means Fire tube boiler vs water tube boiler. Usually two types of boiler is most commonly used in many industries and power generation.
Watertube boiler definition is - a steam boiler in which water to be heated circulates in tubes exposed to fire and enveloped by hot gases.
A fire-tube boiler differs from a water tube boiler, and 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.
The basic difference is that the coiled tube boiler heats the fluid in a serial manner, and the water tube boiler heats in a parallel manner. Because of the difference the water tube boiler is more economical of space and can be used where large volumes of fluid are to be heated.