Energy Efficiency In The Home Flashcards
What is payback time
When money saved = cost of installing the insulation
What is meant by most cost effective
The cheapest method
Why are they cost effective
Because they have a short payback time
What is Cavity wall insulation
-foam between gaps of bricks
What does cavity wall insulation stop
Convection, conduction and radiation
What is loft insulation
Thick layer of fibreglass wool
What does loft insulation reduce
Conduction and radiation
What is draught proofing
Strips of foam and plastic around doors and windows
What does draught proofing stop
Convection
What is a hot water tank jacket
Lagging such a fibreglass wool
What does hot water tank jackets stop
Conduction and radiation
What do thick curtains stop
Conduction an radiation
What is a U-value
Shows how fast heat can transfer through a material
Higher U-values the ……. The heat transfer
Faster
The better the insulator the ……. The u-value
Lower
