Sep 15, 2017 · Answer Wiki. 2 Answers. Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water for steam generation. Steam produced can be used for a variety of purposes including space heating, sterilization, drying, humidification and power generation.
Jul 02, 2016 · 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.
The main two basic boilers are: Water tube boiler ; Fire tube boiler ; The design and arrangement of both the types is just the opposite. In water tube boilers, the feed water passes through the tubes and the hot gases are made to pass over them, while in fire tube boilers, the hot gases passes through the tubes and the feed water surrounds them.
next page) on the membrane design Water-Tube Package Boilers: Unique Features, Rugged Construction Enhance Operation also provide a continuous gas-tight seal between the tube membrane and drums. Where inner-cased construction is used, a 10-gauge plate is welded to the tie bars instead of directly to the pressure parts (shown in 2-B, next page).
Apr 01, 2017 · The source of heat for a boiler is combustion of any of several fuels, such as wood, coal, oil, or natural gas. Electric steam boilers use resistance- or immersion-type heating elements.
The watertube boiler differs from the firetube design in that the tubes contain water rather than combustion gases. In the watertube boiler, the combustion gases travel over the outside surfaces of the tubes and transfer their heat to the water within the tubes. WATERTUBE BOILERS Longitudinal Straight Tube Boilers Fig. 1 illustrates one of the earliest straight tube boilers. The drum runs longitudinally in relation to the tubes.
It is a common form of glass tube water-level gauge. A is the front end plate of the boiler. F is a very hard glass tube indicating water level and is connected to the boiler plate through stuffing boxes in hollow gun metal castings (B, C) having flanges X, Y for bolting the plate.
The mountings usually found on a boiler are: safety valves, main steam stop valve, feed check valve, water level gauge, pressure gauge connection, air release cock, sampling connection, blow down valve, scum valve, etc. Safety valves :These are mounted in pairs to protect the boiler against overpressure.
Thus two valves A and B which control the passage of steam and water between the boiler and the glass tube. When these valves are open, the handles are vertical and the water level in the glass tube will be the water level in the boiler drum. A third valve C called as Blow-off valve is generally closed.
Selection of a boiler, Essentials of Good boiler, Classification of a boiler, Diagram of the boiler, What is a Boiler:It is also defined as “ A closed vessel in which steam is produced from water by the combustion of fuel.”The steam generated is used for
Sep 28, 2013 · PPT ON BOILER 1. It is a first super thermal power plant of RAJASTHAN state. It is located at SURATGARH in GANGANAGAR district. It has 6 units right now in the working. Here each and every unit has 250MW capacity. It’s total capacity is 1500MW. There are two another units are also on construction which has capacity of 660MW each. This power station continue supply from 1999 .
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.
With all the flames in full firing the stm stop is closed, the boiler pressure must not increase by more than 10% in 7 minutes for water tube of 15 mins for tank boilers with the safety lifted. this is normally waivered for superheater boilers. Instead calculations and previous experience used. BLOWDOWN
Oct 24, 2009 · 7. Single Tube and Multi-tube Boilers. The fire tube boilers are classified as single tube and multi-tube boilers, depending upon whether the fire tube is one or more than one. Boiler Mountings: These are the fitting and devices which are necessary for the operation and safety of a boiler.
Steamax boiler is a fully featured advanced design of Water cum smoke tube steam generate. Technology designed for the needs of industries in the 21st century and to comply with anticipated legislation on efficiency & emission control.
Cochran’s wide range of Water Tube Boilers designed for a variety of applications: Fired Boilers (Type A, D and O designs): Applications include Process Steam, Industrial Process, Refineries and Petrochemical. Waste Heat Boilers:Recovering heat from diesel engines, gas engines or the waste heat
Re: Water Tube Boiler Design. On the road, the usual pressure is around 600 lbs., which is maintained by an automatic valve controlling the fuel supply. Each section of the boiler is tested to a water pressure of 5000 lbs. The actual bursting pressure is said to be over 8000 lbs. As a precaution against any danger, however, a safety valve is attached to the boiler.
Jan 04, 2016 · Advances in Boiler Construction and Design The boiler market has been slowly shifting to more efficient condensing units CONDENSING BOILERS: A middle school in North Carolina installed two Weil-McLain SlimFit 1500 condensing boilers to improve heating efficiency at the facility.
It is also called water gauge.It is an important piece of equipment, which indicates the water level inside the boiler to an observer. It is a safety device, upon which the correct working of the boiler depends. This fitting may be seen in front of the boiler, and are generally two in number. 2. Pressure gauge:
Watertube boilers are better suited to higher pressures than firetube boilers, because they: 1. incorporate a bent tube design 2. are larger than firetube boilers 3. do not have flat surfaces subjected to pressure 4. usually have smaller diameter tubes 5. have smaller diameter drums a) 1, 2 b) 1, 3, 5 c) 2, 3, 5 d) 1, 2, 5 e) 1, 3, 4, 5
Finally I chose a water tube boiler design known as the Robert's, Clark or Almy Type with one steam drum and two mud drums. The first goal was to guarantee the best welding conditions. As second goal I wanted a fire box for long flaming fuel as coal and wood.
Dec 07, 2011 · The following are the important mountings of the boiler: Water level indicator Safety valve Pressure gauge Steam stop valve Feed check valve Main hole 1. Water level indicator: this device indicates the exact level of water in the boiler tube. 2.
The main components of this boiler mainly include a shell, furnace, grate, mountings, water space, accessories, refectory, level of water, scale, foaming, lagging, and blowing off. Steam Boiler Types. The steam boilers are classified into several types based on its requirement. Water Tube Boiler
This boiler is fitted with various mountings viz., safety valve, steam stop valve, pressure gauge, water level indicator, fusible plug, feed check valve, blow-off valve etc. This boiler is also fitted with super-heater as shown in Fig. 11.10. Design of Sterling Bent Tube Boiler: It is a – (a) Water tube, (b) Multi drum and
drum designs, water level is extremely critical because the baffling may isolate a generating section of the boiler when the steam drum water level falls below a certain point.
The tangent tube design allows for unsurpassed convective internal pumping and maximum heat transfer. Standard design pressure is 160 PSI / ASME Section IV, with higher pressures available. Flexible burner selection; Useable heated water in under 15 minutes; Easy access to boiler controls for safety and serviceability
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.
(Fusion Welded And Seamless Forged Drums For Water Tube Boilers And Super Heaters) > CHAPTER - VI (Requisite Mountings, Fittings and Auxiliaries) > CHAPTER - VII (Boiler And Super Heater Tubes, Headers And Other Pressure Parts Tubes) > CHAPTER - VIII
Water level gauges are one of the most important mountings of the boiler. Always found in pair, the water level gauges help in maintaining and monitoring the appropriate water level in the boiler. Thus they help in preventing accidents and damage to the boiler.
Water tubes boilers are more readily accessible for cleaning,inspection and repairs,compared to the fire tube boilers. Modern trend is in the favors of water tube boiler due to continuous increase in capacities and steam pressures. 26 Boiler Mountings and Accessories. Fitting and devices which are necessary for the
What is a Boiler? Boiler Mountings & Accessories: In this article, I will explain about What is a Boiler?Selection of a boiler, Essentials of Good boiler, Classification of a boiler, Diagram of the boiler, Boiler Mountings and Boiler Accessories in a detailed way.
May 27, 2016 · The function of various boiler mountings and accessories are: 1. Water Level Indicator. It is fitted in front of the boiler and generally present two in number. It is used to indicate the water level inside the boiler. It shows the instantaneous level of water that is present inside the steam boiler which is necessary for its proper working. 2.
latest design of water tube boiler mountings Industrial boile. latest design of water tube boiler mountings October 19, 2018 0 Comments charles industrial watertube boilers Cleaver-Brooks Every industrial watertube furnace utilizes an innovative .
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 discussed below.
The design of water tube boilers is strictly opposite to that of fire tube boilers design. In water tube boiler systems, the water to be heated is enclosed inside the boiler tubes whereas the hot combustion gases exhausted by the burner keep circulating around the tube surfaces. The water within the tubes then gets heated via the hot flue gases and finally converted into steam.
Condensate Return is also expressed as % of FWF If Condensate Return = 60% Make up = 40% % Condensate + % Make up = 100% = FWF As the boiler water cycles of concentration increase then the feedwater flow and the steam make approach the same number. Basic Boiler Calculations.
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.
Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water for steam generation. Steam produced can be used for a variety of purposes including space heating, sterilization , drying, humidification and power generation.
The end of the drain pipe from the air valve must be visible in order to determine when water or steam is coming out. Scum valve. The scum valve is mounted at the top of the boiler body. In the event of scum in the boiler, this scum can be blown off from the water surface by opening this valve.
Watertube boilers, because of their smaller water content in relation to their steam raising capacity, require certain additional mountings: >Automatic feed water regulator . Fitted in the feed line prior to the main check valve, this device is essential to ensure the correct water level in.the boiler during all load conditions.