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Heat Insulation in Buildings.
Loft Insulation, Hot Water Tanks and Hot Water Pipes.
How does Loft Insulation Work?
The space between the roof and the ceiling
is called the loft.
Glass fibre or other loft
insulation materials are laid across the
loft to reduce the rate of heat transfer out of the roof. See the
picture below. Glass fibre works as an insulator
by traping air.
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).
How are Hot Water
Tanks and Hot Water
Pipes Insulated?
A polymer
foam is used to insulate a hot
water tank
and the hot
water pipes.
The foam traps air and is fixed
to the outside of the hot
water tank and wrapped
around the hot
water pipes. This type of insulation is
called lagging. The lagging may also have an
inside shiny surface to reduce heat loss by radiation.
Links
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