How a thermal power plant works

Thermal Power Generation,Nuclear Power Generation

Nuclear Power Generation

It is estimated that the coal reserve of our country will be exhausted within the next 40 years, if coal continues to be consumed at the current rate. The solution to this situation is a nuclear power plant as thought. In a nuclear power plant, uranium 235 undergoes nuclear fission. In fission process, U 235 is bombarded by a beam of neutrons. The collision of neutrons with 235 U nucleus creates enormous thermal energy along with other neutrons. These newly created neutrons are called fission neutrons hit again by another mare U235 nuclear and create thermal energy and other fission neutrons. During the fission process in the core of U 235 is divided into two parts. The fission process is commutative in nature. Therefore, a nuclear reaction is a chain reaction and therefore should be allowed to be produced in a controlled manner. Moderate and control rods are used to control this chain reaction.
power plant neuclear
Moderate used to reduce the speed of neutrons and the control rods are used to absorb neutrons to maintain neutron required for the process number. Moderates are made of heavy water or carbon rods and control are pure cadmium or boron steel. The speed of the nuclear reaction can be controlled by inserting control rods to a desire deeply into the reaction chamber. Pushing down and pulling up the control rods, the output of the plant nuclear generation is controlled. Although this process is not manual, which is controlled by the automatic control system feedback. The heat generated during fission is removed from the reactor through which coolant is liquid sodium or some gaseous fluids. The coolant is circulated between the heat exchanger and reactor. Heat taken reactor and heat to water occurs in the heat exchanger. Thus, water in the heat exchanger becomes high pressure and high temperature steam. The steam drives a turbine and then exhausted to a condenser where it is condensed to water and cooled for re-feeding to the heater switches back through a feed water pump. The main advantage of the nuclear power plant is the minimum fuel consumption. It was observed that for the operation of a 1,000 MW thermal power plant, nearly 6 kg X106 coal to be burned every day, while in a nuclear power plant only 2.5 kg of uranium consumed daily to get same output. But the initial investment in nuclear power plant is quite high. It produces electricity without causing any air pollution, but always has the possibility of radiation hazard due to leaks in the reactor chamber. Another major disadvantage of this plant is its withdrawal, because its provisions are not free of radioactivity.
Unconventional Power Power Generation

Although the main sources of power generation are thermal, hydal and nuclear power plants, but there are still many other unconventional sources of energy available. These unconventional sources such as wind power, solar energy, MHD generation, fuel cell, etc. they are becoming promising alternative sources for power generation.