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Energy Transfer

Heat - Insulation - Conduction - Buildings.

Loft Insulation, water tank and pipes.

The space between the roof and the ceiling is called the loft.
Glass fibre is laid across the loft to reduce heat transfer out of the roof.
Glass fibre traps air like woollen clothing.

The glass fibre with trapped air is a very poor conductor 
which reduces heat transfer from the ceiling to the loft.
The room in the house stays warmer for longer (see costs).
Loft Insulation

Glass fibre can also be used to insulate a hot water tank and pipes.
The fibre is put inside a cloth container
and wrapped around the tank and pipes.
This type of insulation is called lagging.
The lagging may also have an inside shiny surface
to reduce heat loss by radiation.

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Copyright © 2008 Dr. Colin France. All Rights Reserved.