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can you name 3 ways which energy can be transferred?
Conduction, convection, radiation.
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What is a heat sink?
Anything that is cooler than its surroundings (absorbs heat).
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What is a U-value?
A U-value is a measure of how fast a material loses heat. the lower the U-value the better the insulator.
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What is Payback time?
payback time (years) = cost of installation (£) ÷ savings per year in fuel costs (£)
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What is a Vacuum flask?
a container that keeps a substance hot or cold by means of a double wall enclosing a vacuum e.g triple glazed windows.
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How can heat transfer rates be altered in a building?
triple glazed windows, loft insulation, fit carpet, fit cavity wall insulation.
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what is the specific heat capacity of water?
4200 Jules per kg
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what is the specific heat capacity of oxygen?
0.918 Jules per kg
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Card 2

Front

What is a heat sink?

Back

Anything that is cooler than its surroundings (absorbs heat).

Card 3

Front

What is a U-value?

Back

Preview of the front of card 3

Card 4

Front

What is Payback time?

Back

Preview of the front of card 4

Card 5

Front

What is a Vacuum flask?

Back

Preview of the front of card 5
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