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4. Heat transfer mechanisms
To fully understand the benefits of thermal insulation, it's essential to understand the mechanisms behind heat transfer and the associated physical principles.
4.1 Heat transfer basics
In order to study a heat transfer phenomenon, three elements must first be defined:
the medium, which may be made up of several regions of the same medium, or the superposition of several media. It is also necessary to know the state of the matter that constitutes the media (solid, liquid or gas);
the temperature gradient, which is the difference in temperature between the inside and outside of a system made up of one or more media. These temperatures can evolve over time, naturally tending towards...
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Heat transfer mechanisms
Different thermal insulation methods
Bibliography
Standards and norms
- Thermal insulation – Determination of steady-state heat transfer properties in pipe insulation - NF EN ISO 8497 - 1996
- Thermal insulation for building equipment and industrial facilities – Calculation methods - NF EN ISO 12241 - 2010
- Insulation work – Thermal insulation of circuits, devices and accessories –80 °C to +650 °C – Part 1-1: Technical specifications – Part 1-2: General material selection criteria...
Regulations
RT2000 thermal regulations. Règles de calcul Th-Bât/Th-U, published by CSTB (replaces DTU P50-702 1988, Règles Th-K 77).
RT2012 thermal regulations. Règles de calcul Th-B-C-E 2012, Published by CSTB
Decree no. 2012-1530 of December 28, 2012 on the thermal characteristics and energy performance of building constructions
Patents
FR2991697. Thermal insulation panel. DUFORESTEL Thierry, DE CACQUERAY Diane and MILLEVILLE Pierre-Henri.2012
FR2991698. Thermal insulation device. DUFORESTEL Thierry and MILLEVILLE Pierre-Henri.2012
Specialized organizations and laboratories (non-exhaustive list)
ACERMI – Association pour la certification des matériaux Isolants, 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.
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