MathLiveEnergy efficiency
Energy efficiency is the ratio of useful energy output to the energy supplied to a machine or process. It is used to compare how much of the input energy is converted into useful work or output.
\eta=\frac{A}{Q}What the symbols mean
| energy efficiency, a dimensionless ratio often expressed as a percentage | |
| useful energy output (work or energy delivered) | |
| energy input supplied to the machine or process |
About this formula
- FieldPhysics
- TopicEnergy and thermodynamics
- LevelHigh school
- Also calledenergy conversion efficiency, efficiency formula, useful energy output over input, efficiency of a machine, energy efficiency ratio, conversion efficiency
- SourceWikidata Q192704
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