Types of insulation 0.0 / 5 ? PhysicsInsulationGCSEWJEC Created by: Cari.brownCreated on: 21-04-16 17:48 We would paint solar panels black because... They absorb the heat whichgives off ENERGY 1 of 6 What is a cavity wall? 2 layers of brick with an air gap in between 2 of 6 What type of insulation used in cavity walls? A layer of foam placed in the air gap to stop convection 3 of 6 Heat loss comes from widows, doors and roofs.... We can stop this by using foam and plastic around it,fibreglass wool and loft insulation 4 of 6 Payback time is the time it takes to save what you spent... Payback time= cost DIVIDED by savings per year 5 of 6 What is cost effectiveness? The difference between cost and savings over a period of time. 6 of 6
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