P2 Heat Transfers
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What is thermal conductivity
The ability to transfer thermal energy
Why is insulation important
It prevents energy from escaping of coming keeping temperatures at a similar point
What makes a good insulator
Its thermal conductivity should be very low and should be as thick as possible to prevent conductivity
What is specific heat capacity
The energy needed to raise the temperature of 1kg by 1 degree celsius
What can help to insulate homes to prevent too much energy use
Loft insulation Cavity wall insulation Double glazing
What variables affect how good of an insulator a material is?
-Thermal conductivity (lower is better) -Thickness of the material - Temperature difference across the material
What factors affect the temperature rise of a substance?
• Type of substance • Mass of the substance • How much energy is transferred