S4bP2a. Building Insulation Materials & Their Applications_CLAUDE ALAIN ROULET_30.11.16

34 Pages·2016·2.47 MB·English

I BEEP
NTERNATIONAL CONFERENCE
N 2016
OVEMBER
Building Insulation Materials
and Their Applications
© Claude-A. Roulet, Apples, 2016 1
Thermal
Insulating
Materials
• A material that restricts
the transfer of heat.
• In buildings, material that
restricts the heat transfer
better than structure
materials

© Claude-A. Roulet, Apples, 2016 2
Heat Transfer Modes
Heat = random vibration of atoms/molecules
 Conduction: direct transfer of the thermal
movements from atom to atom or molecule to
molecule

• Convection: transport of heat in moving warm
fluids
 Radiation: agitated, charged atoms or
molecules emit electromagnetic radiation,
which in turn agitate quieter charged atoms or
molecules
 Evaporation- condensation: the heat needed
to evaporate a liquid is recovered where this
vapour condenses.
© Claude-A. Roulet, Apples, 2016 3
The main thermal insulating material in
buildings is
Locked Air
Air is a poor thermal conductor

Air is locked in foam bubbles or between fibres

Bubbles walls and fibres are themselves

opaque to thermal radiation.
5
© Claude-A. Roulet, Apples, 2016
Mineral Fibres
© Claude-A. Roulet, Apples, 2016 6
Organic Fibres
Hemp fibres
Cellulose
Durian skin
Wool
© Claude-A. Roulet, Apples, 2016 7
Wood Fibre and Straw
© Claude-A. Roulet, Apples, 2016 8
Foamglass
© Claude-A. Roulet, Apples, 2016 9
Pumice:
A Natural Inorganic Foam
© Claude-A. Roulet, Apples, 2015 10
Cork
© Claude-A. Roulet, Apples, 2016 11