EN ISO 12631:2017
(Main)Thermal performance of curtain walling - Calculation of thermal transmittance (ISO 12631:2017)
Thermal performance of curtain walling - Calculation of thermal transmittance (ISO 12631:2017)
ISO 12631:2017 specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected to, frames.
The calculation includes:
- different types of glazing, e.g. glass or plastic; single or multiple glazing; with or without low emissivity coating; with cavities filled with air or other gases;
- frames (of any material) with or without thermal breaks;
- different types of opaque panels clad with metal, glass, ceramics or any other material.
Thermal bridge effects at the rebate or connection between the glazed area, the frame area and the panel area are included in the calculation.
The calculation does not include:
- effects of solar radiation;
- heat transfer caused by air leakage;
- calculation of condensation;
- effect of shutters;
- additional heat transfer at the corners and edges of the curtain walling;
- connections to the main building structure nor through fixing lugs;
- curtain wall systems with integrated heating.
NOTE Table 1 in the Introduction shows the relative position of ISO 12631:2017 within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.
Wärmetechnisches Verhalten von Vorhangfassaden - Berechnung des Wärmedurchgangskoeffizienten (ISO 12631:2017)
Diese Internationale Norm legt ein Verfahren zur Ermittlung des Wärmedurchgangskoeffizienten von Vorhangfassaden fest, die aus verglasten und/oder opaken Paneelen, die in Rahmen eingebaut werden oder mit Rahmen verbunden sind, bestehen.
Die Berechnung umfasst
unterschiedliche Verglasungsarten, z. B. aus Glas oder Kunststoff, einfache und mehrfache Verglasungen, Verglasungen mit oder ohne Beschichtungen mit geringem Emissionsgrad sowie Verglasungen mit einem Zwischenraum, der mit Luft oder anderen Gasen gefüllt ist;
Rahmen (aus einem beliebigen Material), mit oder ohne wärmetechnische Trennung;
verschiedene Arten von opaken Paneelen, die mit Metall, Glas, Keramik oder einem anderen Material verkleidet sind.
Die Berechnung berücksichtigt den Einfluss von Wärmebrücken am Falz oder an der Fuge zwischen der verglasten Fläche, dem Rahmen und dem Paneel.
Folgende Faktoren werden in der Berechnung nicht berücksichtigt:
Einflüsse aus der Sonneneinstrahlung;
Wärmeübertragung durch Luftdurchlässigkeit;
Tauverhalten;
Einfluss von Abschlüssen;
zusätzliche Wärmeübertragung an den Ecken und Kanten der Vorhangfassade;
Verbindungen mit dem Tragwerk und die dazu verwendeten Verbindungsmittel;
Vorhangfassaden mit eingebauter Heizung.
Tabelle 1 zeigt die relative Position dieser Norm innerhalb des EPB-Normenpakets.
Performance thermique des façades-rideaux - Calcul du coefficient de transmission thermique (ISO 12631:2017)
L'ISO 12631:2017 spécifie une méthode de calcul du coefficient de transmission thermique des façades-rideaux constituées de panneaux vitrés et/ou opaques montés dans, ou assemblés à, des encadrements.
Le calcul inclut:
- les différents types de vitrage, par exemple verre ou plastique; simples ou multiples; avec ou sans revêtements basse émissivité; avec espaces intercalaires remplis d'air ou d'autres gaz;
- les encadrements (quel que soit le matériau) avec ou sans coupures thermiques;
- les différents types de panneaux opaques revêtus de métal, de verre, de céramique ou d'un autre matériau.
Les effets des ponts thermiques au niveau de la feuillure ou de l'assemblage entre la surface vitrée, la surface de l'encadrement et la surface du panneau sont pris en compte dans le calcul.
Le calcul n'inclut pas:
- les effets du rayonnement solaire;
- le transfert thermique provoqué par des infiltrations d'air;
- le calcul de la condensation;
- l'effet des fermetures;
- le transfert thermique supplémentaire au niveau des coins et des bords de la façade-rideau;
- les assemblages à la structure principale du bâtiment, ni les pattes de fixation;
- les systèmes de façades-rideaux à chauffage intégré.
NOTE Le Tableau 1 de l'Introduction indique la position relative de l'ISO 12631:2017 dans la série de normes PEB dans le contexte de la structure modulaire définie dans l'ISO 52000‑1.
Toplotne značilnosti obešenih fasad - Izračun toplotne prehodnosti (ISO 12631:2017)
Revizija standarda EN ISO 12631:2012 Ta mednarodni standard določa metodo za izračun toplotne prehodnosti obešenih fasad iz steklenih in/ali prosojnih plošč, nameščenih v okvirje ali povezanih z okvirji. Izračun vključuje: – različne vrste zasteklitve, npr. iz stekla ali plastike; enojna ali večkratna zasteklitev; z nanosom ali brez nanosa nizke emisivnosti; z vmesnimi prostori, napolnjenimi z zrakom ali drugimi plini; – okvirje (iz katerega koli materiala) s toplotnimi prekinitvami ali brez; – različne vrste prosojnih plošč, prevlečenih s kovino, steklom, keramiko ali drugimi materiali. Toplotni mostovi na znižanju ali stiku med zastekljenim območjem, območjem okvirja in območjem plošče so vključeni v izračun. Izračun ne vključuje: – učinkov sončnega sevanja; – prenosa toplote zaradi puščanja zraka; – izračuna kondenzacije; – učinkov polken; – dodatnega prenosa toplote v kotih in na robovih obešenih fasad; – povezav z glavno stavbno strukturo ali skozi pritrdilne spoje; – sistemov obešenih fasad z vgrajenim gretjem. Področje uporabe predvidoma ne bo spremenjeno. Opravljena bo uredniška revizija (nova struktura) v kontekstu mandata M/480.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2017
1DGRPHãþD
SIST EN ISO 12631:2013
7RSORWQH]QDþLOQRVWLREHãHQLKIDVDG,]UDþXQWRSORWQHSUHKRGQRVWL ,62
Thermal performance of curtain walling - Calculation of thermal transmittance (ISO
12631:2017)
Wärmetechnisches Verhalten von Vorhangfassaden - Berechnung des
Wärmedurchgangskoeffizienten (ISO 12631:2017)
Performance thermique des façades-rideaux - Calcul du coefficient de transmission
thermique (ISO 12631:2017)
Ta slovenski standard je istoveten z: EN ISO 12631:2017
ICS:
91.060.10 Stene. Predelne stene. Walls. Partitions. Facades
Fasade
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 12631
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2017
EUROPÄISCHE NORM
ICS 91.060.10; 91.120.10 Supersedes EN ISO 12631:2012
English Version
Thermal performance of curtain walling - Calculation of
thermal transmittance (ISO 12631:2017)
Performance thermique des façades-rideaux - Calcul du Wärmetechnisches Verhalten von Vorhangfassaden -
coefficient de transmission thermique (ISO Berechnung des Wärmedurchgangskoeffizienten (ISO
12631:2017) 12631:2017)
This European Standard was approved by CEN on 27 February 2017.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12631:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 12631:2017) has been prepared by Technical Committee CEN/TC 89 “Thermal
performance of buildings and building components”, the secretariat of which is held by SIS, in
collaboration with Technical Committee ISO/TC 163 "Thermal performance and energy use in the built
environment".
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2018 and conflicting national standards shall
be withdrawn at the latest by January 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This document is part of the set of standards on the energy performance of buildings (the set of EPB
standards) and has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association (Mandate M/480, see reference [EF1] below), and supports essential
requirements of EU Directive 2010/31/EC on the energy performance of buildings (EPBD, [EF2]).
In case this standard is used in the context of national or regional legal requirements, mandatory
choices may be given at national or regional level for such specific applications, in particular for the
application within the context of EU Directives transposed into national legal requirements.
Further target groups are users of the voluntary common European Union certification scheme for the
energy performance of non-residential buildings (EPBD art.11.9) and any other regional (e.g. Pan
European) parties wanting to motivate their assumptions by classifying the building energy
performance for a dedicated building stock.
This document supersedes EN ISO 12631:2012.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
References:
[EF1] Mandate M480, Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of
standards for a methodology calculating the integrated energy performance of buildings and
promoting the energy efficiency of buildings, in accordance with the terms set in the recast of the
Directive on the energy performance of buildings (2010/31/EU) of 14th December 2010
th
[EF2] EPBD, Recast of the Directive on the energy performance of buildings (2010/31/EU) of 14
December 2010
Endorsement notice
The text of ISO 12631:2017 has been approved by CEN as EN ISO 12631:2017 without any modification.
INTERNATIONAL ISO
STANDARD 12631
Second edition
2017-06
Thermal performance of curtain
walling — Calculation of thermal
transmittance
Performance thermique des façades-rideaux — Calcul du coefficient
de transmission thermique
Reference number
ISO 12631:2017(E)
©
ISO 2017
ISO 12631:2017(E)
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved
ISO 12631:2017(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and subscripts . 3
4.1 Symbols . 3
4.2 Subscripts . 3
4.3 Superscripts . . 3
5 Description of the methods . 3
5.1 Output of the method . 3
5.2 General description . 4
5.3 Geometrical characteristics . 4
5.3.1 Main principles . 4
5.3.2 Internal depth . 6
5.3.3 Boundaries of curtain wall structures . 7
5.3.4 Cut-off planes and partitioning of thermal zones.10
6 Methodologies for the calculation of curtain wall transmittance .10
7 Single assessment method .12
7.1 Output data .12
7.2 Calculation time intervals .12
7.3 Input data .12
7.3.1 Geometrical characteristics .12
7.3.2 Thermal characteristics .16
7.4 Calculation procedure .18
7.4.1 Applicable time interval .18
7.4.2 Calculation of thermal transmittance .18
8 Component assessment method .19
8.1 Output data .19
8.2 Calculation time intervals .19
8.3 Input data .19
8.3.1 Geometrical characteristics .19
8.3.2 Thermal characteristics .23
8.4 Calculation procedure .26
8.4.1 Applicable time interval .26
8.4.2 Calculation of thermal transmittance .26
9 Report .27
9.1 Contents of report .
...
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