Non metals such as wool and fibreglass are good insualtors. (They keep you warm!!)
The higher the thermal conductivity of a material, the higher the rate of energy transfer through the material.
A thick layer of insulating material will have a low rate of energy transfer. - that is what we like to keep out houses warm!
1 of 4
P2.2 - Specific heat capacity...
Specific heat capacity is the amount of energy needed to change the temparature of 1kg of the substance by 1 degree celcius.
the greater the mass, the more slowly the temperature will increase.
You can use a themometer to work out the temperature.
2 of 4
Specific heat capacity equation..
3 of 4
p2.3 - Heating and Insulating buildings...
Houses are heated by electric or gas, oil or central heating systems, or by fuel in fireburners or stoves.
Rate of energy transfer from houses can be reduced by having, loft insulation, cavity wall insulation, double glazed windows, aliminum foil behind radiators and thicker external walls.
cavity wall insulation is when insulation is used to fill the cavity between two brick layers of an external house wall.
Comments
No comments have yet been made