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  • Created by: N7JAY
  • Created on: 15-01-14 19:14
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  • Energy Efficiency
    • Sankey Diagrams
      • its efficiency  =15/100 =0.15
      • Its percentage =0.15 x 100% = 15%
    • Electrical Appliances
      • They transfer electrical every into useful energy at the flick of a switch
        • Each appliance is designed for a particular purpose
          • For example and amplifier for speakers
    • Using electrical energy
      • E = P X T
      • E- is the energy transferred in kilowatt hours
      • P- is the power in kilowatts
      • T-  is the time taken for the energy to be transferred in hours
    • Cost effectiveness matters
      • The capital costs, the running costs, environmental costs
      • cost efficnecy means getting the best value for money


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