Starting Motor In the compressor, alternator, and turbine are attached to the same shaft. The steel penstocks can be designed for any head; the thickness of the penstock increases with the head or working pressure. A large amount of heat energy is generated due to nuclear fission. The force of water jet striking the buckets on the wheel drives the turbine. A masonary dam may be built in a narrow canyon.
The primary system and secondary system are closed loop, and they are never allowed to mix up with each other. The temperature is about 3000 oF. But we try to give you some of our best collection regarding power plant schematic minecraft that we get from various source. Hydro Electric Power Plant: Here I am going to explain you the. During the fission of 235U, some of the neutrons are absorbed by the more abundant uranium isotope 238U enriched uranium contains only about 3% of 235U while most of its is 238U converting it to plutonium 239U , which in itself is a fissionable material and can be extracted from the reactor fuel waste by a fuel reprocessing plant. The coolant may be water, gas or a liquid metal.
In the combustion chamber, there are burners through which fuel oil is injected in the form of oil spray. Water flows radially inwards through regulating gates all around the sides, changing direction in the runner to axial flow. Even with the control rods fully lowered quickly called scram operation, the fission does continue and its after-heat may cause vaporizing and dispersal of radioactive material. For this reason, closed conduits are always provided with a surge tank. A Francis turbine is used for low to medium heads. You can click on red hotspots in the schematic or on items in the right-hand equipment menu to see corresponding lubricant information.
The surge tank absorbs this pressure swing by increase in its level of water. First, let us know what is the function of a power generating station. The steam, after doing its work, is converted back into the water and recycled to the heat exchanger. . In an impulse turbine, the entire pressure of water is converted into kinetic energy in a nozzle and the velocity of the jet drives the wheel. The generated electrical voltage is then stepped up using a transformer for the purpose of long distance transmission.
However, when the load on the turbine decreases, the governor closes the gates of turbine, reducing water supply to the turbine. Combustion Chamber After passing through the regenerator, the hot compressed air enters into the combustion chamber. The schematic diagram of a is shown in Fig. In fact, the developed countries have already switched over in a big way to the use of nuclear energy for power generation. Handles monitoring, fueling and cooling of one or more nuclear reactors. Wherever possible, it is preferable to support such a station with a pumped storage scheme mentioned earlier. The world uranium resources are quite limited, and at the present rate may not last much beyond 50 years.
In a hydro electric power station, water head is created by constructing a dam across a river or lake. Heat exchanger is absent in boiling water reactors. A generating station which utilises the potential energy of water at a high level for the generation of electrical energy is known as a hydro electric power station. As the nuclei break up, it releases energy as well as more neutrons which further cause fission of neighboring atoms. It consists of a wheel fitted with elliptical buckets along its periphery.
Hence, it is a chain reaction and it must be controlled, otherwise it may result in explosion. The example of this type of turbine is the Pelton wheel. At most of sites, more than one type of dam may be suitable and the one which is most economical is chosen. Various types of reactors are being used in practice for power plant purposes, viz. However, safety considerations require that they be normally located away from populated areas. Heat exchanger In the heat exchanger, the primary coolant transfers heat to the secondary coolant water. When water runs out of a penstock faster than it enters, a vacuum is created which may cause the penstock to collapse.
The water turbine captures the energy in the falling water and changes the hydraulic energy i. Here, the mixture of gases is suddenly expanded and it gains required kinetic energy to do mechanical work to rotate the turbine shaft main shaft. Several other will be commissioned by 2012. Due to fission, a large amount of heat energy is produced which is transferred to the reactor coolant. The generated steam is then allowed to drive a steam turbine. It is known as hydel power generating station. However, when closed conduits are used, protection becomes necessary to limit the abnormal pressure in theconduit.