Glossary
Technical insulation: Thermal insulation of equipment

Conductivité thermique déclarée; declared thermal conductivity

Value of the thermal conductivity of a material or product used for building equipment and industrial installations:

• based on data measured under reference temperature and humidity conditions;

• provided as a limit value, according to the ISO 13787 determination method;

• corresponding to a reasonable expected life under normal conditions.

Conductivité thermique utile; useful thermal conductivity

Value of the thermal conductivity of an insulating material or product, under specific outdoor and indoor conditions, which can be considered typical of the performance of this material or product when incorporated into building...