reducing unwanted energy transfer Flashcards
1
Q
what do hot water tank jackets and double glazing reduce
A
conduction
2
Q
what does draught proofing reduce and what does it stop
A
convection by stopping hot air going out and cold air going in
3
Q
what reduces conduction and convection (4) and which need insulating foam to stop convection
A
loft insulation, thick curtains and cavity walls and cavity walls insulation which have gaps therefore needing foam
4
Q
formula for payback time
A
installation cost / annual saving
5
Q
on an energy band label, from A to G which is best and which is worst and what do they mean
A
a is best so energy efficient and low running costs
g is worst
