Efficiency

• Efficiency

  • The efficiency of a system is a measure of the amount of wasted energy in an energy transfer
  • Efficiency is defined as:The ratio of the useful energy output from a system to its total energy input
  • If a system has high efficiency, this means most of the energy transferred is useful
  • If a system has low efficiency, this means most of the energy transferred is wasted
  • Efficiency can be represented as a decimal or as a percentage
• Efficiency

  • The equations for efficiency are: 
  • Since power is the energy transferred per unit time, power can also be used to calculate efficiency