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efficiency |
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efficiencyIn physics, a general term indicating the degree to which a process or device can convert energy from one form to another without loss, or how effectively energy is used, and wasted energy, such as heat and sound, minimized. It is normally expressed as a fraction or a percentage, where 100% indicates conversion with no loss. The efficiency of a machine, for example, is the ratio of the energy output to the energy input; in practice it is always less than 100% because of frictional heat losses. For example, 75% of the electrical energy of an electric light bulb is converted into heat and only 25% is converted into light. Therefore, an electric light bulb is not an efficient energy converter. Certain electrical machines with no moving parts, such as transformers, can approach 100% efficiency.
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| Both The Solaire and The Verdesian utilize natural materials and sophisticated technologies to optimize resident comfort, maximize operational efficiencies and enhance indoor air quality, while conserving natural resources. New's recent tests of 496 Chevrolet engines on well sites showed they could be hand tuned to the same high efficiencies as electronically controlled engines, but logic and experience tell him they probably can't operate at those peak levels at all times without electronic control. Now they report efficiencies above those of current LEDs from a new family of materials called poly(cyanoterephthalylidene)s. |
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