Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Electrophoresis (cataphoresis) to Ephemeral

Energy Efficiency - History Of Energy Concerns, Energy Efficiency In Buildings, Transportation, Energy Efficiency In Industry, Other Techniques For Increasing Energy Efficiency

process travel mpg achieved

Energy efficiency refers to any process by which the amount of useful energy obtained from some process is increased compared to the amount of energy put into that process. As a simple example, some automobiles can travel 40 mi (17 km) by burning a single gallon (liter) of gasoline, while others can travel only 20 mpg (8.5 km/l). The energy efficiency achieved by the first car is twice that achieved by the second car. In general, energy efficiency is measured in units such as mpg, lumens per watt, or some similar "output per input" unit.

Energy Transfer - History Of Energy Transfer Research, The Laws Of Thermodynamics And Energy Transfer In Food Webs, Components Of The Food Web [next] [back] Energy Budgets - Forms Of Energy, Energy Transformations And The Laws Of Thermodynamics, Physical Energy Budgets, Budgets Of Fixed Energy

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or

Vote down Vote up

almost 6 years ago

This is retarded piece of information I've ever read.