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Is all of the energy transfered when an appliance is used?
No it its not, some energy is wasted.
1 of 5
What does payback time mean?
The cost of which it is to payback the cost of a device e.g double glased windows.
2 of 5
What is the equastion for working out payback time?
paybacktime(years) = cost of instillation(£) divided by savings per year in fuel costs(£).
3 of 5
Can you name 1 way which waste energy is useful?
heat exchanges.
4 of 5
What energy transfer would take place in a kettle?
conduction, the kettle will heat the water, but some will be 'waste' energy.
5 of 5

Other cards in this set

Card 2

Front

What does payback time mean?

Back

The cost of which it is to payback the cost of a device e.g double glased windows.

Card 3

Front

What is the equastion for working out payback time?

Back

Preview of the front of card 3

Card 4

Front

Can you name 1 way which waste energy is useful?

Back

Preview of the front of card 4

Card 5

Front

What energy transfer would take place in a kettle?

Back

Preview of the front of card 5

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