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Wind turbines are usually 100-120 m high above the ground.The height is usually fixed based on the diameter of the blades.But if the height increses the available wind power increases yielding more power.But the cost also increases.So based on the diameter of blades height is decided.usually for a 80m dia blades the height ranges between 100-120m
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe Enercon E 126 is the tallest wind turbine with a hub heigth of 138 meters.
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High pressure steam turns the blades of?
High pressure steam hits the blades of a TURBINE and turns its shaft.
What is turbine windage protection?
when steam flow blockage occured in steam turbine due to damage of blades/nozzles than steam temperature will increase so protect the turbine from high temperature this protection is introduced.
Why is multistage used in steam turbine?
multistage is used because the expansion of high pressure steam will be gradual and as a result the rotor wont vibrate.suppose we have only 1 stage of blades in a turbine, hence all the steam will expand in the given stage and the speed of the rotor will be in high range around 30,000m/s, which is very difficult to control and operate the turbine.
Why the steam turbine needs preheating before the operating?
there are stages, fixed blades on the turbine shell and rotating blades on the rotor. They are very close together sooo, because the steam enters at one end of the turbine it heats that area first and it expands the metal there faster than at the other end causing it to rub. if you heat it slowly the turbine casing and the rotor grow at ~ the same rate so the stages don't rub together. If you heat too quickly,by just admitting a high volume of steam, the rotor heats up to fast, because of it has less metal to heat up, it rubs the fixed blades. this is called going long (the rotor is longer than the tolerances between the fixed blades on the casing)
Why to out bleed steam in turbine?
When steam contains liquid droplets while doing work at high temperatures, the water droplets can etch metal. To combat this, steam can be superheated or the pressure of the system is reduced.
High pressure steam turns the blades of?
High pressure steam hits the blades of a TURBINE and turns its shaft.
Can you build wind turbine blades out of balsa wood on a meter-high wind turbine that have an rpm of 8700?
yes
How many blades should i put on my model wind turbine?
The number of blades in wind turbine is not determined by aesthetics but by science. The size, shape, solidarity, and positioning is determined by the weather conditions and power output. Current tubbiness include turbines using vortexes (no blades) and high solidarity turbines (12 blades) once popular on farms to pump water.If the model is a replica of actual turbine the number of blades in the model will be the same as the number in the actual unit.
What has the author P P Millan written?
P. P. Millan has written: 'Oxide-dispersion-strengthened turbine blades' -- subject(s): Oxidation resistance, High temperature, Turbine blades, Protective coatings, Oxide dispersion strengthening
What is turbine windage protection?
when steam flow blockage occured in steam turbine due to damage of blades/nozzles than steam temperature will increase so protect the turbine from high temperature this protection is introduced.
How high are most wind turbines off the ground?
The centers look to be about 150 ft. above ground-level. The blades look to be 30-40 ft. long. Each. Normally 3 blades to the "rig". I've seen several "wind-farms" but can't find a good source for seeds. :)
What source of energy is used to make a large generator turn?
It is usually a steam turbine that powers a large generator, in which case it is the mechanical force caused by high pressure steam impinging on the turbine blades.
What does steam do to a turbine?
Steam (under pressure) comes into contact with the blades of the turbine through which it is flowing and, by the direct application of force, causes the blades to move, turning the turbine shaft. The turbine coverts the thermal energy of the steam into (rotating) mechanical energy. Surf on over to our friends at Wikipedia using the provided link and get more info. Oh, and check out the pics! Answer it depends what type of turbine one is using types of steam turbine 1 impulse turbine 2 reaction turbine in 1 st one steam is completely expanded inside nozzle and all pressure energy get converted in to kinetic energy using this impulse force turbine runs. in 2nd steam is multiple stage blades are used where high pressure superheated steam gets expanded inside the turbine in each stage and after each stage velocity of steam increases. very high temperature superheated steam is reaquired because it has very high specific volume which helps in reducing mass flow rate of steam.
What is the theory behind generating electricity through hydroelectric power?
The main theory is that in a closed system, water at a high physical level runs downhill to a lower physical level. This water flow through the generators turbine blades induce the turbine to turn. Control of the water flow through the blades controls the speed of the turbine generator. The head pressure and volume of the water govern the size of the generator that is connected to the turbine.
How high are wind turbines above the ground?
Wind turbines are usually 100-120 m high above the ground.The height is usually fixed based on the diameter of the blades.But if the height increses the available wind power increases yielding more power.But the cost also increases.So based on the diameter of blades height is decided.usually for a 80m dia blades the height ranges between 100-120m
Why is multistage used in steam turbine?
multistage is used because the expansion of high pressure steam will be gradual and as a result the rotor wont vibrate.suppose we have only 1 stage of blades in a turbine, hence all the steam will expand in the given stage and the speed of the rotor will be in high range around 30,000m/s, which is very difficult to control and operate the turbine.
Is the temperature of the air high above the ground above or below 0?
ABOVE
