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The function of the super heater is to increase the temperature of the steam above saturation by utilising the heat from the flue gases.
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∙ 11y ago
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Geta is a math function or string function?
GetA is a math function and not a string function.
If an inverse function undoes the work of the original function the original function's becomes the inverse function's domain?
The original function's RANGE becomes the inverse function's domain.
The inverse of a function is always a function?
a function is a added to the iverse function and multiply the SQURED AND CUBIC OR ethc......
Is an exponential function is the inverse of a logarithmic function?
No, an function only contains a certain amount of vertices; leaving a logarithmic function to NOT be the inverse of an exponential function.
If an inverse function undoes the work of the original function the original function's range becomes the inverse function's?
range TPate
Why is that you use 347H tubes in superheater in ammonia plant whereas in power plants the superheater tubes are of P22?
People who know about things like that at all, would know the answer, or at least ask a pro not WikiAnswers.
Which safety valve should be set to discharge at lower pressure drum safety valve or super heater safety vlave?
The Superheater safety valve must be the lowest set safety valve on any boiler, in order that flow through the superheater is maintained.If the drum valve were set lower the flow through the superheater would be disrupted on an overpressure.
When are superheater safety valves set to open?
after the main safety valves are open
What will happen if the superheater safety valve lift first in the boiler?
If the superheater safety valve lifts first the excess pressure will be relieved and no damage will be done due to overheating. This is a good thing and the way it should work. If the boiler safety valve were to open first there would not be enough of a steam flow through the superheater to "cool" the tubes of the superheater which could result in severe damage. +++ ??? That does not read right at all. For a start, steam only flows through the superheater when the engine cylinder or turbine is operating. Locomotive boilers' superheaters don't have safety-valves on them, and the regulator is upstream of the superheater, but they don't overheat when the regulator is closed. The boiler safety-valve would not lessen the flow of steam through the superheater anyway - its role is to vent excess steam hence prevent over-pressure in the boiler. A safety-valve on a superheater would similarly only protect the pipes from over-pressure, not from overheating.In fact it's difficult to think of a situation in which a superheater can be overheated to the point of damage. OK Let us look at your rebuttal to my answer and I will explain why you are wrong. First you say that steam only flows through the superheater when the engine cylinder or turbine is operating. This is true but it is the first indication that you don't really understand thermodynamics. The steam is not flowing but the temperature continues to rise. Just because the safety valve lifts you don't automatically shut off the fire and this heat continues to act on the superheater raising the temperature to a level where it could damage the metal of the superheater tubes. In other words, the superheater tubes get hot from the fire and the steam gets superheated by carrying this heat away. If this heat is not removed the tube overheats and becomes damaged. But hey don't take my word for it lets see what the experts have to say. In the 40th edition of Steam, Its Generation and Use by Babcock & Wilcox Chapter 23 Page 6 under Safety and relief Valves paragraph 6 and I quote "For drum boilers with superheaters, Babcock & Wilcox (B&W) prefers to follow the Code allowed procedure of setting the safety valves so that the superheater valve(s) lift first at all loads, thereby maintaining a flow of steam through the superheater(s) to provide a measure of over-heat protection."
what happen if superheater tubes are misalligment?
ummm noooo the superheat would burn the would
Why attemperation given between sh1 and sh2?
I assume that you are asking "Why is the attemperation water spray placed between the primary superheater and the secondary superheater?" This gives time for all the spray water to evaporate and still be effective at de-superheating, or attemperating.
What is the required Capacity size on Superheater safety valve?
the answer is 2, plus another 5 to be sure
What is the function of super heater?
A superheater increases the temperature of the steam for use in a turbine or an engine. Without the additional heat, a multi-stage turbine or engine will get moisture (water) in the lower pressure stages as the steam cools, causing erosion of the blades or cylinders.
When boiler use cyclone separator and why?
for the purpose of water-steam separation. High efficiency separation is very important in order to: - prevent water droplet carryover into the superheater, where serious thermal damage can occur. - prevent the carryover of solids entrained in water droplets into the superheater and turbine blading, where deposits may form, which are difficult to remove. These deposits end up reducing turbine efficiency and causing superheater tube temperature increases, distortion or even burnout.
What the device used to increase the temperature of the saturated steam without increasing its pressure is called?
There is a small problem with the question: if you increase the temperature of saturated steam without increasing pressure, it will no longer be saturated - it will be superheated. With this in mind, it should be no surprise that the device that does this is normally called a "superheater". The picture accompanying this question is an example of a superheater.
Can 321 be used instead of 347H in superheater tubes?
no 321 can't be sued in place of 347H in place of superheater tubes in ammonia plant as in 321 when we weld craters devrlop which is not there in case of 347 H Niobium has more affinity than Titanium for carbon and high temperature stability of Niobium Carbide is more superior than Titanium Carbides
What is platen superheater?
it is a low pressure heater used in the boiler system in the thermal power plants to convert the saturated steam into super heated steam.
