9. Glossary

9.1 Thermal insulation

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,...

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Bibliography

(1) - BALCKE (H.) - La technique moderne de la protection contre la chaleur et le froid. - Dunod (1935).
(2) - BALLOT (G.) - Guide pratique de l'isolation frigorifique. - PYC-Édition (1972).

Standards and norms

Vocabulary and definitions

Thermal performance of buildings and building materials – Physical quantities and definitions - NF EN ISO 7345 - 2018
Thermal insulation – Vocabulary - NF EN ISO 9229 - 2020

Calculations

Thermal insulation for building equipment and industrial facilities – Calculation methods - NF EN ISO 12241 - 2010
Thermal insulation of heated and refrigerated...

Regulations

Existing buildings

Decree of May 3, 2007 on the thermal characteristics and energy performance of existing buildings (article 22), amended by the decree of March 22, 2017 amending the decree of May 3, 2007 on the thermal characteristics and energy performance of existing buildings (article 4).

Energy saving certificates

Order of December 6, 2018 amending...