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Flashcards in Energy & Efficiency Deck (8)
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1

Cavity wall insulation reduces...

Convection and radiation across the gap
Pockets of air in the foam reduce conduction

2

Loft insulation reduces heat loss from...

Conduction
Convection

3

Draught-proofing reduces heat loss from...

Convection

4

Hot water tank jacket reduces...

Conduction
Radiation

5

Thick curtains reduce heat loss from...

Conduction
Radiation

6

U-values show...

How fast heat can transfer through a material

7

Heat transfers _____ through materials with higher U-values.

Faster

8

Efficiency is calculated by...

Efficiency = Useful energy out divided by Total energy in