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Water Tube Boilers
Suitable for high steam pressure (above 500 psig) and temperature(to 1000 F) and large capacities exceeding millions of lb/h of steam.
Extended surfaces can be used in waste heat applications to make the boilers compact if the gas stream is clean.
Various types of fuels can be fired with ease including solid,liquid and gaseous. The water cooled membrane wall construction makes an excellent furnace.
If the gas stream is dirty(as in MSW applications)provision can be made for cleaning using soot blowers or rapping mechanisms.Wide spaced tubes can be used at the gas inlet to minimize bridging of slag deposits and tube spacing can be decreased as the gas is cooled.This flexibility does not exist in fire tube designs.
Superheaters if used can be located at the optimum gas temperature region shielded by any number of screen tubes.In fire tube boiler the choice is at the gas inlet or exit.
Due to low water volume,the startup time is lesser and response to load changes is faster compared to fire tube boilers.
If the gas pressure is high,say above 5 psig,the shell/casing design gets complicated and expensive though it can be done.
Due to higher heat transfer coefficients surface area required is lesser and hence gas pressure drop is also lower.
For multiple pressure designs as in gas turbine exhaust applications,water tube is the only choice.
What else can I help you with?
What are the 2 main types of boilers?
Fire tube and water tube. Steam Boiler and Water Boiler.
What is the difference between a Mac and an UZI?
Uzi has a high fire rate, and Mac has more accuracy but less fire rate
What is the major difference between noncombustible construction and fire resistive construction?
Basically non combustible and fire resistive are the same. Difference is non combustible has steel frame members that are unprotected or limited protected. Fire resistive has protected steel frame members with a fire rated material such as concrete.
What is the difference between wet riser and dry riser?
A Dry Riser is a system of valves and pipework which enables the Fire Service to pump water on to the upper floors of a building. A Wet Riser is a system of valves and pipework which are kept permanently charged with water.
What is the difference between between FR and FRLS wire?
FR --> Fire Retardant FRLS-->Fire Retardant low smoke When ever wire gets fire Fr wire emit more smoke where as FRLS wire emits low smoke than the FR wires...
Difference between fire tube boiler and water tube boiler?
The difference between the two is that the Water tube boilers are safer and last much longer than the fire tube boiler. Their size is also larger and have a faster recovery time. However fire tube boilers have a low cost.
What are the three basic types of low pressure boilers?
The three basic types of low pressure boilers are fire tube boilers, water tube boilers, and cast iron sectional boilers. Fire tube boilers heat water by circulating hot gases through tubes, water tube boilers circulate water through tubes that are heated externally, and cast iron sectional boilers have multiple sections that heat water as it flows through them.
What is difference between vertical and horizantal boiler?
there are two types of boilers water tube and fire tube. fire tube boilers are divided in to two categories vertical and horizontal. this according to the construction of fire tubes. it is said that vertical boilers are inefficient than horizontal boilers. The vertical boiler is small capacity, and horizontal boiler is higher capacity, well, the horizontal boiler have many types according the drums, there are single drums boiler, and double drums boiler, while, the single drums boiler have fire tube boiler and water and fire tube boiler, double drums boiler is usually water tube boiler.
Which kind of water tubes are used for boilers?
fire tubes or water tubes
Why sediment deposition is less in water tube boiler?
Sediment deposition is less in water tube boilers compared to fire tube boilers because water tube boilers have a higher water velocity that helps prevent sediment from settling on the tubes. Additionally, the design of water tube boilers allows for easier removal of any sediment that does accumulate.
What are the 2 main types of boilers?
Fire tube and water tube. Steam Boiler and Water Boiler.
Difference between water tube boiler and fire tube boiler?
The answer is in the name. Boilers are made with a "tube - in - shell" construction, and the name implies what is in the tube. In a water tube boiler, the water circulates through the tubes, and the burner is usually under them. Most of the time, the "shell" of this style of boiler would not be watertight. A fire tube boiler has a watertight outer jacket with tubes through the center of it. The flame is shot through the tubes.
Why pressure is low in fire tube boilers?
Hot pressure
What are the difference between hydrant and hydrant monitor?
hydrant is the sub part of fire water network from which water shall be discharged to on fire parts, and from where the hydrants gets water is the monitor, i.e from monitor water shall be distributed to hydrants.
How can you tell the difference between a fire ant and a native fire ant?
What
What are some applications for a water tube boiler?
Water tube boilers are used in marine and stationary applications. A water tube boiler heats by water flowing through tubes and being heated by fire externally.
What is the difference between a Kindle Fire and a tablet?
The difference is that the kindle fire is thicker but has more chances than the nook.
