make a list of conventional and non conventional sources of energy. give a brief description of harnessing one non conventional sources of energy please answer fast
Answers
Answer:
Explanation:
Conventional sources of energy are fossil fuels like coal, oil, wood, water, wind and uranium.
Non-conventional sources of energy include:
Solar power
Hydro-electric power (dams in rivers)
Wind power
Tidal power
Ocean wave power
Geothermal power (heat from deep under the ground)
Ocean thermal power (the difference in heat between shallow and deep water)
Biomass (burning of vegetation to stop it producing methane)
Biofuel (producing ethanol (petroleum) from plants
Below is the working of a solar cell which harnesses solar energy:
A solar cell is an electronic device which directly converts sunlight into electricity. Light shining on the solar cell produces both a current and a voltage to generate electric power. This process requires firstly, a material in which the absorption of light raises an electron to a higher energy state, and secondly, the movement of this higher energy electron from the solar cell into an external circuit. The electron then dissipates its energy in the external circuit and returns to the solar cell. A variety of materials and processes can potentially satisfy the requirements for photovoltaic energy conversion, but in practice nearly all photovoltaic energy conversion uses semiconductor materials in the form of a p-n junction.
The basic steps in the operation of a solar cell are:
the generation of light-generated carriers;
the collection of the light-generated carries to generate a current;
the generation of a large voltage across the solar cell; and
the dissipation of power in the load and in parasitic resistances.
Answer:
Conventional Sources of Energy
- Fossil fuels
- Hydro-electric Power Plant
- Thermal Power Plant
- Bio-mass
Non-Conventional Sources of Energy
- Solar Energy
- Tidal Energy
- Nuclear Energy
- Ocean Thermal Energy
Harnessing nuclear energy:
Nuclear energy is a non-conventional source of energy and can be harnessed by a process called nuclear fission. The nucleus of a heavy atom (such as uranium, plutonium or thorium), when bombarded with low-energy neutrons, can be split apart into lighter nuclei. When this is done, a tremendous amount of energy is released if the mass of the original nucleus is just a little more than the sum of the masses of the individual products. The fission of an atom of uranium, for example, produces 10 million times the energy produced by the combustion of an atom of carbon from coal. In a nuclear reactor designed for electric power generation, such nuclear ‘fuel’ can be part of a self-sustaining fission chain reaction that releases energy at a controlled rate. The released energy can be used to produce steam and further generate electricity.