Energy Efficiency
Revision as of 20:14, 2 February 2019 by NRJC (talk | contribs) (Created page with "==Key Stage 4== ===Meaning=== '''Energy efficiency''' is a ratio of Useful Energy transferred to total energy put into a [[system]...")
Key Stage 4
Meaning
Energy efficiency is a ratio of Useful Energy transferred to total energy put into a system.
About Efficiency
- Energy efficiency is a measure of how effectively energy is transferred from one energy store into an intended energy store.
- Efficiency may be written as a percentage or as a decimal.
- Efficiency as a percentage can never be greater than 100% and as a decimal can never be greater than 1 because you can never get more energy out than you put in due to Conservation of Energy.
Equation
\(Efficiency = \frac{Useful_ Energy_ Out}{Total_ Energy_ In}\)