energy conversion


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energy conversion

[′en·ər·jē kən′vər·zhən]
(physics)
The process of changing energy from one form to another.

Energy conversion

The process of changing energy from one form to another. There are many conversion processes that appear as routine phenomena in nature, such as the evaporation of water by solar energy or the storage of solar energy in fossil fuels. In the world of technology the term is more generally applied to operations of human origin in which the energy is made more usable; for instance, the burning of coal in power plants to convert chemical energy into electricity, the burning of gasoline in automobile engines to convert chemical energy into propulsive energy of a moving vehicle, or the burning of a propellant for ion rockets and plasma jets to provide thrust.

There are well-established principles in science which define the conditions and limits under which energy conversions can be effected, for example, the law of the conservation of energy, the second law of thermodynamics, the Bernoulli principle, and the Gibbs free-energy relation. Recognizable forms of energy which allow varying degrees of conversion include chemical, atomic, electrical, mechanical, light, potential, pressure, kinetic, and heat energy. In some conversion operations the transformation of energy from one form to another, more desirable form may approach 100% efficiency, whereas with others even a “perfect” device or system may have a theoretical limiting efficiency far below 100%. See Energy sources

References in periodicals archive ?
The company spent more than e1/43mfor energy conversion, including coal, waste energy and agricultural waste.
It has been stressed since May 2007 that discharged thermal energy conversion technology uses the heat generated from the cooling processes at the power plants and oil installations to create electricity.
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We're committed to providing world-class solutions for the BAPV market that are flexible, cost-effective and easy to install," said Mark Morelli, president and CEO of United Solar's parent company, Energy Conversion Devices.
Contact: Energy Conversion Devices Inc, website www.
The agreement allows Sanyo to manufacture the batteries for two- and three-wheeled vehicles in Japan and China for worldwide sale, and for four or more wheel vehicles made in Japan for domestic sales and export, Energy Conversion Devices said.
Produces a more complex energy conversion, with a by-product of lactic acid.
The "secrets of the molecular electronics" of photosynthesis will soon become available for solar energy conversion, Barber and Andersson predict.
com/research/kfchr3/materials_for) has announced the addition of the "Materials for Energy Conversion and Storage" report to their offering.
Called ocean thermal power energy conversion, it harnesses temperature difference between warm surface water and frigid deep seawater to make electricity.
Electrical energy conversion and transport; an interactive computer-based approach, 2d ed.
of Sofia, Bulgaria) describes electrical energy conversion technologies and associated electronic converters, which are becoming increasingly important as the variety of generation methods grows and efficiency becomes more critical.

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