NF EN ISO 13791

NF EN ISO 13791

July 2005
Standard Cancelled

Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - General criteria and validation procedures

ISO 13791:2004 specifies the assumptions, boundary conditions, equations and validation tests for a calculation procedure, under transient hourly conditions, of the internal temperatures (air and operative) during the warm period, of a single room without any cooling/heating equipment in operation. No specific numerical techniques are imposed by this standard. Validation tests are included. An example of a solution technique is given in Annex A.ISO 13791:2004 does not contain sufficient information for defining a procedure able to determine the internal conditions of special zones such as attached sun spaces, atria, indirect passive solar components (Trombe walls, solar panels) and zones in which the solar radiation may pass through the room. For such situations different assumptions and more detailed solution models are needed.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2005

Number of pages

91 p.

Reference

NF EN ISO 13791

ICS Codes

91.120.10   Thermal insulation of buildings

Classification index

P50-751

Print number

1 - 25/08/2005

International kinship

ISO 13791:2004

European kinship

EN ISO 13791:2004
Sumary
Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - General criteria and validation procedures

ISO 13791:2004 specifies the assumptions, boundary conditions, equations and validation tests for a calculation procedure, under transient hourly conditions, of the internal temperatures (air and operative) during the warm period, of a single room without any cooling/heating equipment in operation. No specific numerical techniques are imposed by this standard. Validation tests are included. An example of a solution technique is given in Annex A.

ISO 13791:2004 does not contain sufficient information for defining a procedure able to determine the internal conditions of special zones such as attached sun spaces, atria, indirect passive solar components (Trombe walls, solar panels) and zones in which the solar radiation may pass through the room. For such situations different assumptions and more detailed solution models are needed.

Standard replaced by (1)
NF EN ISO 13791
November 2012
Standard Cancelled
Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - General criteria and validation procedures

ISO 13791:2011 specifies the assumptions, boundary conditions, equations and validation tests for a calculation procedure, under transient hourly conditions, of the internal temperatures (air and operative) during warm periods, of a single room without any cooling/heating equipment in operation.

Table of contents
  • Avant-propos
    4
  • Introduction
    5
  • 1 Domaine d'application
    5
  • 2 Références normatives
    5
  • 3 Termes, définitions, symboles et unités
    6
  • 3.1 Termes et définitions
    6
  • 3.2 Symboles et unités
    7
  • 3.3 Indices
    8
  • 4 Détermination des températures intérieures
    8
  • 4.1 Hypothèses
    8
  • 4.2 Évaluation des températures utiles
    9
  • 4.3 Bilan thermique d'un local
    12
  • 4.4 Conditions aux limites
    13
  • 4.5 Termes des équations de bilan thermique
    17
  • 5 Procédure pour effectuer des calculs
    26
  • 5.1 Généralités
    26
  • 5.2 Données climatiques de référence
    26
  • 5.3 Caractéristiques géométriques et thermophysiques des éléments constituants du local
    27
  • 5.4 Apports internes de référence
    27
  • 5.5 Comportement de référence des occupants
    27
  • 5.6 Méthode de calcul
    28
  • 6 Compte-rendu de calcul
    28
  • 7 Procédures de validation
    29
  • 7.1 Introduction
    29
  • 7.2 Validation des processus de transfert thermique
    29
  • 7.3 Procédure de validation de l'ensemble de la méthode de calcul
    36
  • Annexe A (informative) Exemple de technique de résolution
    49
  • Annexe B (informative) Coefficient de transmission thermique par convection à travers une lame d'air ventilée
    56
  • Annexe C (informative) Ombrage causé par les surplombs et les avancées latérales
    62
  • Annexe D (informative) Données climatiques de référence relatives à la saison chaude
    70
  • Annexe E (informative) Calcul des échanges radiatifs intérieurs en grande longueur d'onde dans les bâtiments
    71
  • Annexe F (informative) Coefficients d'échanges thermiques radiatifs extérieurs en grande longueur d'onde
    73
  • Annexe G (informative) Facteurs solaires
    75
  • Annexe H (informative) Apports internes
    77
  • Annexe J (informative) Renouvellement d'air
    80
  • Annexe K (informative) Résultats détaillés des essais de validation pris en compte dans "l'ensemble de la procédure de modèle de validation"
    87
  • Bibliographie
    89
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