NF EN 673
NF EN 673

NF EN 673

December 1998
Standard Cancelled

Glass in building. Determination of thermal transmittance (U value). Calculation method.

Le présent document présente une méthode de calcul du coefficient de transmission thermique des vitrages à surfaces planes et parallèles.

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Main informations

Collections

National standards and national normative documents

Publication date

December 1998

Number of pages

19 p.

Reference

NF EN 673

ICS Codes

81.040.20   Glass in building

Classification index

P78-460

Print number

1 - octobre 2008

European kinship

EN 673:1997
Sumary
Glass in building. Determination of thermal transmittance (U value). Calculation method.

Le présent document présente une méthode de calcul du coefficient de transmission thermique des vitrages à surfaces planes et parallèles.
Standard replaced by (1)
NF EN 673
NF EN 673
April 2011
Standard Cancelled
Glass in building - Determination of thermal transmittance (U value) - Calculation method

Le présent document spécifie une méthode de calcul du coefficient de transmission thermique des vitrages à surfaces planes et parallèles.

Table of contents
  • Avant-propos
    3
  • 1 Domaine d'application
    4
  • 2 Références normatives
    4
  • 3 Symboles
    5
  • 4 Définitions
    6
  • 5 Formules de base
    6
  • 6 Propriétés fondamentales des matériaux
    8
  • 7 Coefficients d'échange thermique superficiel extérieur et intérieur
    10
  • 8 Valeurs déclarées : conditions limites normalisées
    11
  • 9 Expression des résultats
    11
  • 10 Rapport d'essai
    12
  • Annexe A (normative) Détermination de l'émissivité normale et de l'émissivité corrigée
    13
  • Annexe B (normative) Procédure d'itération pour les vitrages comportant plus d'un espace de gaz
    15
  • Annexe C (informative) Bibliographie
    16
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