EN ISO 10211:2007

SLOVENSKI STANDARD
01-maj-2008
1DGRPHãþD
SIST EN ISO 10211-1:1997
SIST EN ISO 10211-1:1997/AC:2002
SIST EN ISO 10211-2:2002
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L]UDþXQL,62
Thermal bridges in building construction - Heat flows and surface temperatures -
Detailed calculations (ISO 10211:2007)
Wärmebrücken im Hochbau - Wärmeströme und Oberflächentemperaturen - Detaillierte
Berechnungen (ISO 10211:2007)
Ponts thermiques dans les bâtiments - Flux thermiques et températures superficielles -
Calculs détaillés (ISO 10211:2007)
Ta slovenski standard je istoveten z: EN ISO 10211:2007
ICS:
91.120.10
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 10211
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2007
ICS 91.120.10 Supersedes EN ISO 10211-1:1995, EN ISO 10211-2:2001

English Version
Thermal bridges in building construction - Heat flows and
surface temperatures - Detailed calculations (ISO 10211:2007)
Ponts thermiques dans les bâtiments - Flux thermiques et Wärmebrücken im Hochbau - Wärmeströme und
températures superficielles - Calculs détaillés (ISO Oberflächentemperaturen - Detaillierte Berechnungen (ISO
10211:2007) 10211:2007)
This European Standard was approved by CEN on 7 December 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10211:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3

Foreword
This document (EN ISO 10211:2007) has been prepared by Technical Committee ISO/TC 163 "Thermal
performance and energy use in the built environment" in collaboration with Technical Committee CEN/TC 89
"Thermal performance of buildings and building components", the secretariat of which is held by SIS.
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 June 2008, and conflicting national standards shall be withdrawn at
the latest by June 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 10211-1:1995, EN ISO 10211-2:2001.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 10211:2007 has been approved by CEN as a EN ISO 10211:2007 without any modification.

INTERNATIONAL ISO
STANDARD 10211
First edition
2007-12-15
Thermal bridges in building
construction — Heat flows and surface
temperatures — Detailed calculations
Ponts thermiques dans les bâtiments — Flux thermiques et
températures superficielles — Calculs détaillés

Reference number
ISO 10211:2007(E)
©
ISO 2007
ISO 10211:2007(E)
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ii © ISO 2007 – All rights reserved

ISO 10211:2007(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope .1
2 Normative references .1
3 Terms, definitions, symbols, units and subscripts.2
3.1 Terms and definitions .2
3.2 Symbols and units.6
3.3 Subscripts .7
4 Principles.7
5 Modelling of the construction .7
5.1 Dimension systems .7
5.2 Rules for modelling .7
5.3 Conditions for simplifying the geometrical model.13
6 Input data.17
6.1 General.17
6.2 Thermal conductivities of materials .18
6.3 Surface resistances.18
6.4 Boundary temperatures .18
6.5 Thermal conductivity of quasi-homogeneous layers .18
6.6 Equivalent thermal conductivity of air cavities .18
6.7 Determining the temperature in an adjacent unheated room .19
7 Calculation method.19
7.1 Solution technique.19
7.2 Calculation rules.19
8 Determination of thermal coupling coefficients and heat flow rate from 3-D calculations .20
8.1 Two boundary temperatures, unpartitioned model.20
8.2 Two boundary temperatures, partitioned model.20
8.3 More than two boundary temperatures .21
9 Calculations using linear and point thermal transmittances from 3-D calculations .21
9.1 Calculation of thermal coupling coefficient.21
9.2 Calculation of linear and point thermal transmittances .22
10 Determination of thermal coupling coefficient, heat flow rate and linear thermal
transmittance from 2-D calculations.23
10.1 Two boundary temperatures .23
10.2 More than two boundary temperatures .23
10.3 Determination of the linear thermal transmittance .23
10.4 Determination of the linear thermal transmittance for wall/floor junctions.24
10.5 Determination of the external periodic heat transfer coefficient for ground floors .25
11 Determination of the temperature at the internal surface .26
11.1 Determination of the temperature at the internal surface from 3-D calculations .26
11.2 Determination of the temperature at the internal surface from 2-D calculations .27
12 Input and output data .28
12.1 Input data.28
12.2 Output data.28
Annex A (normative) Validation of calculation methods .30
ISO 10211:2007(E)
Annex B (informative) Examples of the determination of the linear and
point thermal transmittances. 37
Annex C (informative) Determination of values of thermal coupling coefficient and temperature
weighting factor for more than two boundary temperatures . 40
Bibliography . 45

iv © ISO 2007 – All rights reserved

ISO 10211:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10211 was pre
...