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Solar energy: Energy flow diagrams
Energy flow diagrams
Energy flow diagrams show what is happening to a particular type of energy as it is used or changed in some process or situation.
Energy flow diagram for solar hot water system
Energy flow diagrams can be extended to include other forms of energy, such as light energy, electrical energy and heat energy.

An example of an energy flow diagram for solar energy and a solar hot water system is shown.


  1. Some solar hot water heaters have an electric booster heater built into their tanks. Add the flow of electrical energy to the above energy flow diagram.
  2. Draw an energy flow diagram for a totally electric kettle.
  3. Draw an energy flow diagram for an electric room heater.


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