why is steam is used to drive the turbines instead of water?
115248
steam has more energy in it. steam is derived from heating water up, so steam will contains much more energy and thus translate to a more powerful turbine .
143466
By using a steam powered engine to turn electric turbines or generators.
677623
False\n\nWhen steam is cooled to water, both can be 100 degrees C, but steam must give off energy to become a liquid.  The opposite is easier to understand.  When you are boiling water, the steam that escapes will be 100 degrees C, but will have much more energy than the 100 degree water.\n\nIn both of these cases, the energy put into or taken out of the water is used to change its phase, without changing its temperature.
257069
It is a plant where gas, like LP, is used to heat water, the steam runs the turbines, and electric is produced.
75638
It's use water to get electricity\nA electricity is produce by turbine , there is a several way to make this turbine working by motor, by wind flow, by water,....\nIn case of water the hogh velocity of water during shut down make the turbin turn and produce electricity
978582
These answers start answering themselves as you read.  I think you missed this key data while studing.\nhumidity is the amount of steam(heated water) in the air\na drop in heat makes condensation(the water is no longer steam but water)\nthat is the point of all these questions keep that in mind while answering them.\n\nhope this helps\n-David-
870138
They burn the coal.\nThe heat generated by burning the coal is used to boil water.\nThe water turns to steam.\nThe steam turns a turbine.\nThe turbine is connected to a magneto.\nThe magneto generates electricity.\n\nViola!
850621
In the same manner as a turbine with a horizontal one, by the water moving the blades. its tha rotation that generates the power. The alignment of the shaft doesn't matter, its the force transferred to the generator/alternator that matters.\n\nThere shouln't be any significant change in the turbine blades.\n\nIt may be easier in certain designs to couple the generator set to the shaft if its mounted vertcially in some locations.
339414
some reactors don't need them b/c they're not cooled by water.  they have liquid metal reactors and also gas cooled reactors.  however.  however, in a boiling water reactor the water that turns the turbines never comes in contact w/the outside, it simply stays in the reactors in a continuous loop.  that heated water is used to boil other water which causes the turbines to turn.  pretty much all of the reactors used in the United States are PWR so they all will have cooling towers.
949037
It means that only five percent of the energy that went into creating the steam to power the steam engine is realized as power output by the steam engine. Steam engines are in fact energy conversion machines. They take in energy in the form of enthalpy in the steam entering the machine, and convert that energy into rotational or linear mechanical energy. Like all machines, there are losses along the way, such as friction, or radiation losses that cool the steam before it has a chance to do any useful work, or steam leaks that prevent all of the steam from doing useful work.
587903
Steam isn't "hotter", it's still at 100°.  What it has though is more heat energy in it kg for kg.  The extra energy is the heat of vaporization and it's the reason the steam takes up so much more volume than the water at the same temperature.  The water molecules have the same average kenetic energy - temperature - but they occupy much less space.
1115503
Basically, the steam (at pressure) is condensed (little or no pressure) on the far side of the turbine.  The change in pressure causes the steam to flow, pushing the turbine blades.  Steam turbine maintenance is either preventive or repair.  Preventive maintenance is focused on keeping corrosion and wear minimized.  Repairs include rebalancing, replacing rotors, welding to increase worn areas and replacing bearings.
616186
The potential energy, stored by the water due to its height, converts to kinetic energy as it falls. This turns the turbines which in turn create electrical energy.\n\nThis conversion requires the use of a generator (the rotation of the coils of wire that cuts through the magnetic fields of some magnets results in electricity forming; refer to Fleming.)
566985
I believe your question needs a bit of restructuring.Hydal power is itself stored energy in form stored water at a higher level.Energy is usually released when water is allowed to fall down over turbine i,e potential energy is converted to kinetic energy of turbine blades.
222519
If it's white, it is steam (water vapor). The coal and the water are separated from each other. The heat from the coal passes through a heat exchanger where it will evaporate the water, drive the turbine, and exit through the stack. Smoke from the coal will be emitted separately (and hopefully after passing through a few filters). \n\nTidbit: Modern steam engines don't release all the vapor, but rather recondense it and cycle it through the system again. Not only does this require less water, but is also more efficient since the water being evaporated is already near its boiling point.
859798
when oil is burning it makes a lot of heat. This heat is used to transform water into steam (like when you prepare tea) this stream has much more volume than the water and so has a lot of pressure. This pressure goes via pipes to a turbine an makes it rotate quite fast. On the turbine's axis there is an electrical generator (a bit like the dynamo on an old bicycle) that produce the electricity.\n\nIn the end you have to get rid of the steam typically by cooling in down or sending it into the atmosphere.
614554
The basics....\n\n1. Burn something\n2. Whatever is burnt, boils water that turns into steam.\n3. The steam is used to turn turbines \n4. the turbines generate electricity\n\nFor a more detailed answer, go to howstuffworks.com or wikipedia.