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How is the electricity generated in a coal-fired power plant?
Coal is made from dead plants.In the United States a little about 50%. See http://www.eia.doe.gov for more details.Simplest version:Burn the coal, which generates heat. Use the heat to boil water. The steam from the boiling water forces blades on a generator fan to turn, which turns the generator. Electrical current is then produced. This is a gross oversimplification, but you get the point.More detailed version:A machine called a pulverizer grinds the coal into a fine powder.The coal powder mixes with hot air, which helps the coal burn more efficiently, and the mixture moves to the furnace.The burning coal heats water in a boiler, creating steam.Steam released from the boiler powers an engine called a turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine.The spinning turbine is used to power a generator, a machine that turns mechanical energy into electric energy. This happens when magnets inside a copper coil in the generator spin.A condenser cools the steam moving through the turbine. As the steam is condensed, it turns back into water.The water returns to the boiler, and the cycle begins againCoal is burnt and heats water. Water vapor makes a turbine move and generates electricity. When the coal is burnt, poisonous gases are diffused but has no entry in making electricity and pollutes the air.A coal-fired power station, burns coal to heat water so that it turns into steam. The steam is used to turn turbines. The turbines spin generators which generates electricity. A generator operates by moving coils of wire in a magnetic field, as the wires move, electricity is generated within the wires.Traditionally, coal is burned to produced heat, gasses, and solid waste. The heat is used to boil water. The steam produced turns a turbine which turns a generator. The generator produces electricity. That technique has an efficiency of 40%. China claims it has developed a technique with 60% efficiency. It will be interesting to find out what it is. China has also claimed that it has discovered an inexpensive way to remove Carbon Dioxide from coal fired electric plants. If so, that is a fantastic break through.burning coal is used to boil water. The steam the pushes turbine blades, turning the turbine. The turbine is connected to a generator which produces electricity.-- Coal is burned in air, releasing heat. -- The heat is used to boil water.-- The steam is directed through turbine vanes.-- The turbine spins an electrical generator.
What points in the energy flow through power plant that might produce unwanted forms of energy and make the plant less efficient?
Let's consider a coal-fired power plant. Here we have a boiler that burns coal to produce steam. The boiler radiates heat and this radiant heat loss causes an efficiency penalty - about 1% of the energy in the coal is lost in radiation. Moisture that was in the coal to start with (and even moisture in the air because of humidity) gets heated up in the boiler but does not contribute to the process of combustion. This also causes and efficiency loss. Instead of being properly burned up un the furnace, some of the coal particles just fall to the bottom of the furnace, and is collected along with the ash. The steam that the boiler produced goes to a turbine that spins like a fan because of the pressure in the steam. The turbine drives a generator that produces the electricty that comes out of the power plant. Both the turbine and boiler have some losses due to friction, but the main loss in the turbine is the energy in the steam leaving the exhaust of the turbine. Because we want to condense this steam back into water so we can re-use it for supplying the boiler, the energy lost from the exhaust of the turbine actually makes its way to the cooling tower before being rejected into the atmosphere. It seems inefficienct to do it this way, but it's the best method we have at the moment.
What are the differences between a coal power plant and a hydroelectric power plant?
Coal is used in furnaces to heat water in a boiler to superheated (above 100 degrees Celsius) temperatures, and this steam is used to drive a turbine which, in turn, drives an alternator. A hydroelectric plant uses the vertical fall of water to drive a water turbine which drives an alternator.
What components are present in every nuclear power plant that generates electricity?
(Nuclear reactor) creates heat Water heated to create pressurised steam (Boiler) Pressurised steam released via turbine chamber (Steam Turbine) translating motion to turbine shaft. Turbine shaft windings rotate inside magnets to generate electricity (Generator)
What is the effect of steam turbine control valve throttling in turbine efficiency?
In Boiler follow turbine mode , Boiler produces a constant pressure behind throttling valve and throttling valve adjusts necessary pressure and required steam as High Pressure steam for entering the turbine . In Valves Wide Open (VWO) mode the efficiency is maximum and we haven't any loss. (It's nearly 106% Turbine MCR) . In Turbine MCR , we have a little loss and consequently a little bit worse heat rate . In partial load , loss is more and efficiency worse.
How is coal turned into energy in power plants?
Coal is burned to heat water (in a very large boiler). The water is heated to steam. The steam is then used to turn a steam turbine. The turbine turns a generator, producing electricity!
What does a boiler do in a coal power station?
A boiler in a coal power station is responsible for converting water into steam. The coal is burned in the furnace of the boiler, producing heat which is used to generate steam. This steam is then used to drive a turbine, which spins a generator to produce electricity.
How is electricity produced when coal is burned?
Coal is burned to produce heat The heat is used to produce steam in a boiler. The steam is used to turn a turbine and generator set. This causes electricity to run through the wires.
State why you need coal to generate electricity?
Electricity is made by converting some form of energy into electricity. Coal is used to heat water in a boiler to make steam. The steam pressure rotates a turbine to power a generator.
What can a burning coal do for a power palnt?
burning coal releases heat, and that heat turns a turbine, which generates electricity.
How is energy transformed in a coal burning power plant?
The energy in coal is stored as chemical potential energy.When the coal is burned, this chemical energy is converted to heat. The boiler converts this thermal energy into pressure of the steam.The pressure energy in the steam is then converted into rotating mechanical energy using the turbine. As the turbine spins the generator, the generator converts this into electrical energy.
How is the electricity generated in a coal-fired power plant?
Coal is made from dead plants.In the United States a little about 50%. See http://www.eia.doe.gov for more details.Simplest version:Burn the coal, which generates heat. Use the heat to boil water. The steam from the boiling water forces blades on a generator fan to turn, which turns the generator. Electrical current is then produced. This is a gross oversimplification, but you get the point.More detailed version:A machine called a pulverizer grinds the coal into a fine powder.The coal powder mixes with hot air, which helps the coal burn more efficiently, and the mixture moves to the furnace.The burning coal heats water in a boiler, creating steam.Steam released from the boiler powers an engine called a turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine.The spinning turbine is used to power a generator, a machine that turns mechanical energy into electric energy. This happens when magnets inside a copper coil in the generator spin.A condenser cools the steam moving through the turbine. As the steam is condensed, it turns back into water.The water returns to the boiler, and the cycle begins againCoal is burnt and heats water. Water vapor makes a turbine move and generates electricity. When the coal is burnt, poisonous gases are diffused but has no entry in making electricity and pollutes the air.A coal-fired power station, burns coal to heat water so that it turns into steam. The steam is used to turn turbines. The turbines spin generators which generates electricity. A generator operates by moving coils of wire in a magnetic field, as the wires move, electricity is generated within the wires.Traditionally, coal is burned to produced heat, gasses, and solid waste. The heat is used to boil water. The steam produced turns a turbine which turns a generator. The generator produces electricity. That technique has an efficiency of 40%. China claims it has developed a technique with 60% efficiency. It will be interesting to find out what it is. China has also claimed that it has discovered an inexpensive way to remove Carbon Dioxide from coal fired electric plants. If so, that is a fantastic break through.burning coal is used to boil water. The steam the pushes turbine blades, turning the turbine. The turbine is connected to a generator which produces electricity.-- Coal is burned in air, releasing heat. -- The heat is used to boil water.-- The steam is directed through turbine vanes.-- The turbine spins an electrical generator.
What points in the energy flow through power plant that might produce unwanted forms of energy and make the plant less efficient?
Let's consider a coal-fired power plant. Here we have a boiler that burns coal to produce steam. The boiler radiates heat and this radiant heat loss causes an efficiency penalty - about 1% of the energy in the coal is lost in radiation. Moisture that was in the coal to start with (and even moisture in the air because of humidity) gets heated up in the boiler but does not contribute to the process of combustion. This also causes and efficiency loss. Instead of being properly burned up un the furnace, some of the coal particles just fall to the bottom of the furnace, and is collected along with the ash. The steam that the boiler produced goes to a turbine that spins like a fan because of the pressure in the steam. The turbine drives a generator that produces the electricty that comes out of the power plant. Both the turbine and boiler have some losses due to friction, but the main loss in the turbine is the energy in the steam leaving the exhaust of the turbine. Because we want to condense this steam back into water so we can re-use it for supplying the boiler, the energy lost from the exhaust of the turbine actually makes its way to the cooling tower before being rejected into the atmosphere. It seems inefficienct to do it this way, but it's the best method we have at the moment.
How can coal produce gas and electricity?
Coal when burn produces heat, that heat can be used to generate steam from the boiler. The boiler can be high pressure or low pressure. The steam generated should be superheated i,e, free from condensate, which when pass through turbine produces electricity. On the other coal can produce gas which is inflammable when air of high velocity is passed through the it in a closed chamber. The chamber is called Gasifer. The gas produced from the burning of solid coal is known as producer gas.
How does coal produce electiricity?
The process of converting coal into electricity has multiple steps and is similar to the process used to convert oil and natural gas into electricity:A machine called a pulverizer grinds the coal into a fine powder.The coal powder mixes with hot air, which helps the coal burn more efficiently, and the mixture moves to the furnace.The burning coal heats water in a boiler, creating steam.Steam released from the boiler powers an engine called a http://wiki.answers.com/glossary.html#turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine.The spinning turbine is used to power a http://wiki.answers.com/glossary.html#generator, a machine that turns mechanical energy into electric energy. This happens when magnets inside a copper coil in the generator spin.A condenser cools the steam moving through the turbine. As the steam is condensed, it turns back into water.The water returns to the boiler, and the cycle begins again
What do we use coal most for?
Most coal is burnt to provide heat in a home's fireplace, or to heat a water boiler in a steam engine, or in a coal-fired power station.
How is electricity generated in coal fired power plant?
in your question itself you have said that coal-fired yes electricity is generated by burning coal a large amount of heat is generated as a result. this heat energy is used to heat water inside the boiler tubes. the water is converted to dry saturated steam at this state the temperature is about 540 degree celcius and pressure about 140 kg/sq.cm. this steam is made to expand in a turbine whose shaft is coupled to a generator. when turbine blade rotates due to steam the generator armature also rotates resulting in generation of electricity. simply the heat energy produced by burning coal to heat steam is converted into mechanical energy in steam turbine and then into electrical energy by the generator.....
