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( Energy transformation)
In physics and engineering, energy transformation or energy conversion, is any process of transforming one form of energy to another. Energy of fossil fuels, solar radiation, or nuclear fuels can be converted into other energy forms such as electrical, propulsive, or heating that are more useful to us. Often, machines are used to transform energy. The efficiency of a machine characterizes how well (how efficiently) it can produce a useful output (such as work for example) through such a conversion. Energy transformations are important in the application of the energy concept in various natural sciences including biology, chemistry, geology and cosmology. Energy may be transformed so that it may be used by other natural processes or machines, or else to provide some service to society (such as heat, light, or motion). For example, an internal combustion engine converts the potential chemical energy in gasoline and oxygen into the propulsive energy that moves a vehicle. A solar cell converts solar radiation into electrical energy that can then be used to light a bulb or power a computer. The generic name for a device which converts energy from one form to another is transducer. The steam engine illustrates the energy conversion process. In a steam engine, burning coal heats water (the working fluid), which expands as a gas (steam) and moves a piston. The steam is then cooled in a radiator and once again brought near the hot coals in a cycle that keeps the steam engine moving. The steam engine uses the temperature difference between the hot coal and the radiator to move the piston. The operation of the steam engine is described from an energy perspective by the machine cycles of thermodynamics, from the fluid flow perspective by fluid mechanics, and from the heat flow perspective by the science of heat transfer. In a steam turbine, steam is used to turn the blades of the turbine, which may then be used to turn a generator to produce electricity. This process also requires that the steam be cooled at some point in the process, because this cooling causes the pressure drop in one part of the system which causes the steam to move from one place to another, which causes the blades of the turbine to turn.
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Energy transformation Subcategories
Energy transformation Articles
Youth, Success, & Vitality Through Energy Healing by Sheevaun Moran
Many seek the fountain of youth through some simple, practical, and proactive steps. However, you can gain more youth and vitality through the use of Prana. Prana is energy and it is critical to our daily lives. Without Prana we are without energy....
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