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What is the velocity of the outer turbine blade running at 3600 rpm the diameter of the turbine rotor is ten feet answe in mph?
1285.19 mph
What do you mean by turbine synchronization?
During a typical power plant startup, all components of the power plant are started slowly. The turbine is first rolled at a slow rpm. Then the rpm is increased gradually to a point where it can match the frequency of the grid. At this point, the turbine can be synchronized with the grid and start outputting electricity into the grid.
What is theConstruction difference between stream turbine and gas turbine?
gas turbines and gas engines are different in mechanic designes uses diffrent liquid for engine we use flemmable gas we use for turbine liquide flemmable but they need air both gas turbines and gas engines are different in mechanic designes uses diffrent liquid for engine we use flemmable gas we use for turbine liquide flemmable but they need air both answer by nailiyoucef05@yahoo.fr I dont think so. Gas engine works as the same principle of a petrol engine. And in gas turbine gas is burned and high velocity gas is passed through the turbine. A gas engine is an internal combustion engine and have no turbines. alamm2@asme.org
What is the meaning of rpm of the turbine?
RPM stands for Revolutions Per Minute so, in short, RPM is the number of revolutions that the generator shaft turns in one minute. It seems obvious that the question is really trying to understand RPM vs frequency in Hertz. To understand this, you need to know the number of poles in the rotating and/or stationary magnetic field. In a two pole generator, for instance, an RPM of 1800, or 30 RPS (Revolutions Per Second), yields 60 Hertz power. In a eight pole generator, for instance, an RPM of 450, or 7.5 RPS, yields 60 Hertz power. The equation is simple... FHertz = SRPM / 60 * PNumber of Poles
How do hydroelectric power stations produce electricity?
Water held high up in the hills behind a dam.Pipework drains the lake to a lower level.The force of the water in the pipe is used to spin a turbine.The turbine is connected to an alternator and produces electricity.When it rains the lake is topped up with water.During low demand periods, water can be pumped back up to the lake as well, using electricty from other sources.
Can you build wind turbine blades out of balsa wood on a meter-high wind turbine that have an rpm of 8700?
yes
What is the RPM on the steam locomotive?
7
What is the velocity of the outer turbine blade running at 3600 rpm the diameter of the turbine rotor is ten feet answe in mph?
1285.19 mph
What do you mean by turbine synchronization?
During a typical power plant startup, all components of the power plant are started slowly. The turbine is first rolled at a slow rpm. Then the rpm is increased gradually to a point where it can match the frequency of the grid. At this point, the turbine can be synchronized with the grid and start outputting electricity into the grid.
How do you calculate Wind turbine torque?
Measure the rpm & calculate the torque as power divided by angular velocity
What is the gerb?
gerb is vibration controls Example:steam turbines the foundation base is spring deck this is vibration controls of gerb is take to Siemens in first time in India TATA POWER Mumbai and it is unfortunately steam lines dumping and the running unit is trip to turbine Rpm is 3000, and it's take of spring deck and the spring deck is equal to bike chakap gear's
What is the maximum rpm of a gas turbine engine?
Typically 3600 rpm for 60 hz production. Above answer is not very specific. The maximum RPM of a turbine generally depends on the maximum diameter of the rotating element. For example a large 240MW gas turbine will run at approximately 3000 RPM whereas a car engine turbo can run at 100 000 RPM and above. The limiting factor is that the blade tip velocity must stay below the speed of sound. On one rotation of a big turbine, the circular distance travelled by the blade tip is much further than the distance travelled by the blade tip of a very small turbine, so the RPM on the bigger turbine must be lower in order to stay below the speed of sound. The speed of sound is variable depending on air density, which is in turn affected by air temperature and altitude, so the blade tip velocities on most units run well below the speed of sound so that they can operate under various ambient conditions. Many turbine companies experiment with super-sonic blading as the air compressor sections on gas turbines are much more efficient at higher RPM and you could get significantly more output power with better air compression, but (I believe) that all commercial and industrial engines are sub-sonic.
Steam turbine turning gear?
Steam Turbine Turning Gear - Turning gear is utilized on turbines to reduce eccentricity or out of round of the rotor. When a rotor is standing still it has a tendency to sag due to its weight. While running a turning gear which is a separate motor that turns the rotor slowly 10-50 RPM through a clutching mechanism. This rotation keeps the rotor in balnace. It is very important to run the turning gear on shutdowns and start ups. The time required to run is dependent on the size of your unit. Typically the turning gear must be on for 12-36 hours for small to large steam turbins after shutdown and 2-16 hours prior to a turbine start. If a turning gear is not utilized the rotor will become eccentric and may cause vibration up to wiping rotating parts with the stationary parts causing catastrophic failure. Steamengineer @ Gmail
How fast does a jet engine spin?
There are many variations, but a typical large gas-turbine engine spins at about 12,500 rpm.
What unexpected phenomenon limits the size of turbine fans due to the speed of the outside tip of the fan blade in power plants?
Well it's not really a phenomenon, nor is it unexpected. What limits the diameter of turbine wheels, and flywheels, is actually the tensile strength of the materials used to build the turbine rotor (shaft, wheel, keys, caps, straps and seals). The centrifugal force pushing the outer tip of the turbine away from the center of rotation is a measurable and calculable force. When this force exceeds the tensile strength of the material it will tear the wheel apart. For must materials (steels) used to make turbine wheels this force is between 55,000 and 65,000 pounds force per square inch of cross section of material. This equates directly to a calculated "tip speed" of the turbine wheel, where if the outer rim of the wheel exceeds a particular velocity it will rip the turbine apart. For most steels this tip speed is about 5500 feet per second. (for wooden flywheels it is about 4500 FPS.)Thus the maximum wheel diameter is determined by the maximum rotational speed (RPM) of the turbine. Turbine wheels up to 18 feet in diameter have been built for slow rotating (1200 rpm) turbines. For 3600 RPM machines 6 foot diameter wheels are more commonly the largest where a factor of safety of 3 times is built into the machine. An 18 to 19 foot wheel would be destroyed at about 3600 rpm (the tip speed would exceed 5500 fps). Some turbines run at 30,000 rpm (a 6" DeLaval pump drive turbine is one) and others have run at 600 rpm to generate electricity on a 12 pole generator.**Note: several turbines are designed to operate at greater than the speed of sound (1126 fps). The harmonic vibration that occurs while passing through the sound barrier could destroy a turbine if allowed to build up. Most turbines do not operate at more than 2000 fps. The velocity of the steam through the turbine, depending on the design, will be between 1 to 2 times the velocity of the rotating outer edge of the wheel. Most turbines are designed so that harmonic vibrations (steam velocity, tip speeds of each wheel, seal and bearing surface along with axial vibrations) occur at about 65 to 75 % of the operating speed of the turbine, for small variable speed turbines these harmonics are designed to occur at greater than the maximum operating speed.
What is Turbine cold start up?
cold start up of a steam turbine has to be done after a rather long period of shut down - when turbine case and chest temperature are fallen down dramatically. turbine constructor heating ramps mast be followed in order to avoid thermal stresses on the metal of turbine case , valve case and rotor to avoid also height differential expansion between rotor and case that could lead to contact between case and rotor because of the different thermal inertia of the two parts.when the heating is complited the turbine can be started checking closely the differntial expansion recorders.when at speed the unit can be sincronyzed (usually at 3000 rpm) and then loaded according to the related load ramp.(megawatts\ minute)
Generator is moving 3000 RPM on 320Mw powerif full load rejected and any protection is not activate generator work as a motor what are damage possible?
depends on many things, including the type of prime mover (what is powering generator?). Presuming a steam turbine (or possibly combustion turbine though that's large for a single CT-gen) at that size and speed. "Rejection" of load is a term often misused. I'll presume correct use in this case, meaning that the generator remains connected to the grid, but for some reason has stopped producing power. If on the other hand what was meant was the generator was disconnected from the grid, it will not "motor". Upon rejection of load with no change in prime mover, the turbine would increase speed to a point where turbine over-speed protection would trip the prime mover to the turbine (fuel or steam), perhaps depending on design there may be some pre-emergency turbine controls to help reduce or control speed to below the trip point (perhaps about 110%, again depending on design). but if there is no controls that operate (including on turbine) turbine-generator unit may speed to point of damage (even destruction) as the centrifugal force of the higher speed exceeds design characteristics of the unit. Back to original question... If the generator rejected load due to loss of its field current, or either an open or short circuit in the generator, it likely will not motor. However, if the generator remains wholly intact and connected to the grid (meaning the reason for rejecting load is the loss or reduction of the prime mover to the driving turbine), the generator will motor. Possible generator damage could occur due to heating or pole piece shifting, depending on how sudden the change of phase angle (power flow) occurred. More likely, is (steam) turbine damage caused by overheating, most often starting with the lower pressure area blading. It is not uncommon to "motor" hydro electric generators operating either as a pump, or as a synchronous condenser for voltage or VAR control. But hydro-turbine-generators operate much slower RPM, with larger mass and damage is not incurred.
