Overview
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Renaud FEIDT: Chairman, INVIVO Consulting sas (Industrial expertise and optimization) - Energy engineer graduated from École polytechnique de Nantes
INTRODUCTION
Since the 1970s, all industrialized countries have been pursuing an energy-saving policy, which has led to considerable growth in the thermal insulation sector.
Thermal insulation can be associated with an insulating material, product or system. This article focuses on insulating materials, how they work and their thermo-physical characterization.
The vast majority of modern insulating materials are lightweight porous materials, within which heat is transferred by both conduction and radiation, thanks in particular to their semi-transparent nature.
Three factors that have played an important role in achieving this progress can be mentioned:
the rapid evolution and improvement of insulation manufacturing technologies, with higher productivity and lower costs;
in-depth knowledge of the physical bases of insulator operation;
setting up a quality control system to guarantee the properties of manufactured products, on the one hand by drawing up standards to define and quantify insulation properties (specifications) and set measurement methods (development of reference equipment and materials, particularly for thermal conductivity measurements) and, on the other, by organizing a set of manufacturing control and product certification procedures, such as the ACERMI program in France, to ensure high-performance technical products.
This article takes a look at insulating materials used at room temperature, reviewing their classifications and properties.
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Thermal insulation
Bibliography
Websites
The standards can be consulted on the following websites:
...Specialized organizations and laboratories (non-exhaustive list)
ACERMI – Association for the Certification of Insulating Materials, Paris
AFNOR – Association française de normalisation
CEN – European Committee for Standardization. Technical Committee TC88: Thermal insulating materials and products
CFI – Comité français de l'isolation, Paris
...
Norms and standards
- Isolation thermique. Vocabulaire - EN ISO 9229 - 2007
- Isolation thermique. Détermination de la résistance thermique et des propriétés connexes en régime stationnaire. Méthode de la plaque chaude gardée - ISO 8302 - 1991
- Isolation thermique. Détermination de la résistance thermique et des propriétés connexes en régime stationnaire. Méthode flux métrique - ISO 8301 - 1991
- Isolation thermique. Effets...
Regulations
RT2000 thermal regulations. Th-Bât/Th-U calculation rules, published by CSTB (replaces DTU P50-702 1988, Règles Th-K 77)
RT2012 thermal regulations. Th-B-C-E 2012 calculation rules, published by CSTB
Decree no. 2012-1530 of December 28, 2012 on the thermal characteristics and energy performance of building constructions
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