Episode 5 — Energy Transfer to Surroundings

Energy Transfer Revision

Learners will be able to:

• Label the input energy, useful output energy and wasted output energy on a given Sankey diagram, including the form of each type of energy • Calculate percentages of useful and wasted energy from a block/grid-based Sankey diagram • Determine and justify whether a system (e.g. a light bulb or kettle) is energy efficient based on Sankey diagram values • Identify the most and least efficient process when comparing several Sankey diagrams • Apply the law of conservation of energy to determine whether a given Sankey diagram is physically possible, with reasons