Heat transfer& energy efficiency in the house 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: KoredeakintoyeCreated on: 05-03-14 16:54 What speeds up the rate of heat transfer? Surface area 1 of 6 In a hot climate what size ears would animals have and why? Larger increase surface area loos heat quicker 2 of 6 What is payback time? The money you saved on heating bills equals the initial cost of putting in the insulation 3 of 6 Cavity wall insulation prevents what? Convection currents between walls and radiation across gaps 4 of 6 Loft insulation prevents what? Conduction and radiation 5 of 6 Draught proofing stops what? Convection 6 of 6
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