Nov 24, 2016 · Q (B.1)What do you understand by ‘water tube boilers’ and ‘fire tube boilers’? In water tube boilers the water passes through the tubes and the hot gases passes out side the tubes where as in case of fire tube boiler the hot gases passes through the tubes and the water passes over the tubes
Ther e are two main types of boiler Fire tube boilers and Water tube boilers. Fire tube boilers are those boilers in which fire or flue gases are inside of the tubes and water is on the shell side. Fire Tube Boilers are low capacity low-pressure boilers usually used for heating, processor to produce hot water.
The Walker Process Equipment HeatX™ boiler is a Scotch Marine fire tube boiler and is covered by National Fire Protection Association, NFPA, Codes, Standards, and Recommended Practices. The most important of these are: NFPA 85, Boiler and Combustion Systems Hazards Code, current edition
Aug 22, 2018 · According to the location of furnace there are two types of fire tube boiler and these are external furnace and internal furnace type. There are mainly three types of external furnace fire tube boiler. Horizontal return tubular fire tube boiler. Short fire box fire tube boiler. Compact fire tube boiler.
Oct 19, 2018 · Fire tube boiler working: The simple vertical boiler is a fire tube boiler and easy to understand the working principle of fire tube boilers. Simple vertical fire tube boiler produces steam with low pressure and in small quantities. It uses for low power generation or for limited space.
In a scotch boiler, the furnace is a large diameter tube, within the boiler, surrounded by water. Some older, large scotch boilers had two or three furnaces but modern boilers typically have only one. Scotch boilers may be two-pass, three-pass, or four-pass depending upon the arrangement of baffles and tubes.
Internal furnace boiler - Fire tube Boiler - Packaging Boiler - This is the conventional three pass smoke-tube design coal/wood fired steam boiler having internal furnace. This comes in dry back, semi-wet back and fully wet-back options and is most suitable for manual firing of coal, wood or briquettes. | PowerPoint PPT presentation | free to view
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 the simple vertical, Cochran, Lancashire, Cornish, Locomotive, Scotch marine, and Velcon boiler.
Jan 29, 2017 · Lecture 08: Water Tube Boilers - Duration: 22:29. Steam and Gas Power Systems 58,672 views
Fire Tube Boilers Also referred to as smoke tube boilers, shell boilers, package boilers Multiple gas paths - 2, 3 and 4 pass Internal furnace or fire box as the 1st pass Dry back or wet back design Single fuel or dual fuel design Little or no steam separation equipment
Cochran boiler is a fire tube boiler called as multi tube boiler because it has large number of fire tubes. (v) Stationary and Portable Boilers: Stationary boilers are used for power plants where the boilers are installed permanently and cannot be moved.
Introduction to Boilers. Boiler is an apparatus to produce steam. Thermal energy released by combustion of fuel is transferred to water, which vaporizes and gets converted into steam at the desired temperature and pressure.
Examples, of fire tube steam boilers are : Simple vertical boiler, Cochran boiler, Lancashire boiler, Cornish boiler, Scotch marine boiler, Locomotive boiler, and velcon boiler. Water tube : In water tube steam boilers, the water is contains inside the tube (called water tubes) which are surrounded by the flames and hot gases from outside.
Mar 19, 2016 · Today I am going to tell you difference between fire tube boiler and water tube boiler. The boiler is divided into two main types. One is known as fire tube boiler and the other one is known as water tube boiler. These boilers is largely used in power development and other industrial like sugar industries, cotton industries etc. for steam
Fire-tube boiler – Wikipedia. A fire-tube boiler is a type of boiler in which hot gases from a fire pass through one or (many) more tubes running through a sealed container of water. Steam Boiler | Working principle and Types of Boiler
Inspection and Test Plan for Fire Tube Boiler. As applicable to the welding method used in accordance with the boiler manufacturers quality plan visually inspection on root runs on principal seams and plates, completion of first side and back-gouged groove and after completion of all welding Examination results of non-destructive testing
The efficiency of fire tube boilers has been found quite low. The generation of steam at high pressure and high temperature is not possible in a fire tube boiler. The high rate of steam generation as demanded by the thermal power plants is also not possible in fire tube boiler.
Mar 25, 2017 · Hello, I am going to describe the use of boiler at ship, particularly. * In a layman language, it's a steam generator. * It's a closed pressure vessel in which fluid is heated to generate steam, also called (steam boiler).
Jul 29, 2019 · Steam boiler or simply a boiler is basically a closed vessel CLASSIFICATION OF BOILERS There are mainly two types of boiler – water tube boiler and fire .In boilers, but the most common types of fuel include coal, oil, and natural gas.
According to the structure of industrial boilers, can be divided into water-tube boilers and fire tube boilers. ZG water tube steam boiler is 10-35 ton, fire tube steam boiler capacity is 1-10 ton, while hot water boiler capacity is 0.7-24.5MW. Keyword: Industry steam boiler,Boiler classification
Sep 13, 2018 · The Huber boiler became the first fire-tube boiler to be more complex than several types of boilers before. This boiler has not used one large pipe as a return channel for exhaust gas, but has used several small pipes or tubes in order to maximize heat transfer from the flue gas to the water in the tank.
Boiler Types and Classifications There are two general types of boilers: ''fire-tube'' and ''water-tube''. Boilers are classified as "high-pressure" or "low-pressure" and " steam boiler " or "hot water boiler." Boilers that operate higher than 15 psig are called "high-pressure" boilers.
Classifications of boiler According the gas circulation . Fire tube boiler; Water tube boiler; In a fire tube boilers hot gas or fires goes inside the tubes and tubes are surrounded with water. Hot gases transfer heat to the water through a couple tubes. Earlier fire is inside the tube so it is naming as fire tube.
Divided into by fuel coal fired boiler, oil fired boiler, gas fired boiler, waste heat boilers and nuclear boilers; press can be divided into the fire bed combustion furnace, pulverized coal, fluidized bed boiler (roaster), pressurized fluidized bed boiler and circulation fluidized bed boilers, etc.
Jul 29, 2019 · Steam boiler or simply a boiler is basically a closed vessel CLASSIFICATION OF BOILERS There are mainly two types of boiler - water tube boiler and fire .In boilers, but the most common types of fuel include coal, oil, and natural gas. Vessel Code.2 These rules apply to steam boilers that operate above 15 psig .The function of a boiler
A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or (many) 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.
Apr 23, 2016 · The difference between fire tube boiler and water tube boiler can be done on various points. These points includes types of fluid flows within the tubes, steam generation rate, floor area required for the steam generation, transportation, efficiency, fluctuating loads, operating cost etc. the knowledge of the difference about these two boiler is very crucial.
Boilers can be broadly classified as shell tube and water tube boilers. Shell and tube boilers. Shell and tube boilers are also referred to as fire tube or smoke tube boilers. Fire tube boilers; contain long steel tubes through which the hot gasses from a furnace pass and around which the water to be converted to steam circulates.
Classification of Boilers . The boilers can be classified according to the following criteria. According to flow of water and hot gases. 1. Water tube. 2. Fire tube. In water tube boilers, water circulates through the tubes and hot products of combustion flow over these tubes.
Type: Factory-assembled packaged Scotch marine horizontal fire tube high pressure industrial steam boiler. Three or four pass wetback design with internal furnace located below center of boiler shell. Designed for natural gas and No. 2 fuel oil firing.
Classifications. In a Fire-tube boiler, hot gases of combustion flow through a series of tubes surrounded by water. Alternatively, in a water – tube boiler, water flows in the inside of the tubes and the hot gases from combustion flow around the outside of the tubes. Fire tube boilers are more commonly available for low pressure steam
Fire tube boilers are useful for small demands of steam and water tube boilers are useful for industrial level usage. To cut short the main purpose of boiler is to boil a liquid mostly the water in order to generate the steam for serving the purpose of heating a building or running an equipment through pressurized steam or pressurized water.
Whatever the type of fuel being fired, all high pressure boilers are bound to have a tube failure during the course of their working life. Did you know that a single tube failure in a 500 MW boiler requiring four days of repair work can result in a loss of more than $1,000,000 apart from the generation loss?
Boiler Classification - Energy Engineering Questions and . Apr 05, 2018· Explanation: Cornish boiler is an example of fire tube boiler and also includes Cochran, Lancashire, and Locomotive and scotch marine boilers. Fire tube boilers are those in which the products of combustion pass through the tubes and water lies around the outside of tubes.
WATER TUBE BOILER ⌈2⌋ Water flows through tubes that are surrounded by hot combustion gases in a shell. • Usually rated in tons of steam/hr • Used for H.P. steam • High capacity. In recent years, interest has been revived in high temperature hot water heating systems for institutional, industrial and commercial plants.
Nov 24, 2016 · Construction: Fire tube boiler consists of a vertical, cylindrical shell, equipped with a fire box in the bottom, water space in the middle portion and steam space in the upper portion. The fire grate is placed at the bottom of the fire box and coal is fired at the fire box. An ash pit is located at the bottom of the grate to collect the ash
With fire-tube boilers, hot gas passes through one or many tubes, which through thermal conduction, heats the water surrounding them. Boiler tubes are susceptible to certain damage mechanisms, including: boiler feed water corrosion, graphitization, thermal fatigue, and; corrosion fatigue.
Water tube boilers Water flows inside the tubes and the hot gases flow outside the tubes. Classification of Boilers Examples: Cochran, Lancashire, Cornish, Locomotive boilers Examples: Babcock and Wilcox boiler, Stirling boiler
THEORY: A boiler is a closed vessel in which steam is produced from water by combustion of fuel. The primary requirements of steam generator or boiler are: 1. 2. 3. Water Water drum Fuel for heating TYPES OF BOILERS:- a. b. Water tube boiler Fire tube boiler In the water tube boilers, the water are inside the tube & hot gases surrounds the tubes.