Heating and Insulating Buildings

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What does the U-Value tell us?
The U-Value of a material tells us how much energy passes through it every second.
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How can the rate of energy transfer be minimised?
Fibreglass loft insulation, cavity wall insulation, draught excluder, double glazed windows, aluminium foil behind radiator
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How does fibreglass loft insulation reduce rate of energy transfer?
By reducing energy transfer via conduction
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How does cavity wall insulation reduce rate of energy transfer?
By trapping air in small pockets to reduce energy transfer by convection
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How does double glazing reduce rate of energy transfer?
By reducing energy transfer via conduction through windows
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How does draught proofing reduce rate of energy transfer?
By reducing energy transfer via convection
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How does aluminium foil behind radiators reduce rate of energy transfer?
By reflecting infrared radiation back into the room
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How do solar heating panels work?
Solar heating panels contain water which is heated by radiation from the sun. This water may then be used to heat buildings or provide domestic hot water.
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Advantages and Disadvantages of solar heating panels?
Solar heating panels are cheap to run as they don't use fuel but are expensive to buy and install, and the water is not heated at night.
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Other cards in this set

Card 2

Front

How can the rate of energy transfer be minimised?

Back

Fibreglass loft insulation, cavity wall insulation, draught excluder, double glazed windows, aluminium foil behind radiator

Card 3

Front

How does fibreglass loft insulation reduce rate of energy transfer?

Back

Preview of the front of card 3

Card 4

Front

How does cavity wall insulation reduce rate of energy transfer?

Back

Preview of the front of card 4

Card 5

Front

How does double glazing reduce rate of energy transfer?

Back

Preview of the front of card 5
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