AQA GCSE Combined Science: Synergy · 8465

Energy Efficiency

What you need to know

Calculate the energy efficiency for any given energy transfer, expressing the value as either a decimal or a percentage.
Describe specific practical ways to increase the energy efficiency of a system or device (Higher Tier only).
Recall and apply the equation for calculating energy efficiency: $\text{efficiency} = \frac{\text{useful output energy transfer}}{\text{total input energy transfer}}$

total input energy transfer

useful output energy transfer