EN ISO 13786:2007
(Main)Thermal performance of building components - Dynamic thermal characteristics - Calculation methods (ISO 13786:2007)
Thermal performance of building components - Dynamic thermal characteristics - Calculation methods (ISO 13786:2007)
ISO 13786:2007 specifies the characteristics related to the dynamic thermal behaviour of a complete building component and provides methods for their calculation. It also specifies the information on building materials required for the use of the building component. Since the characteristics depend on the way materials are combined to form building components, ISO 13786:2007 is not applicable to building materials or to unfinished building components.
The definitions given in ISO 13786:2007 are applicable to any building component. A simplified calculation method is provided for plane components consisting of plane layers of substantially homogeneous building materials.
Annex A specifies simpler methods for the estimation of the heat capacities in some limited cases. These methods are suitable for the determination of dynamic thermal properties required for the estimation of energy use. These approximations are not appropriate, however, for product characterization.
Annex B gives the basic principle and examples of applications of the dynamic thermal characteristics defined in ISO 13786:2007.
Annex C provides information for programming the calculation method.
Annex D gives an example of calculation for a building component.
Wärmetechnisches Verhalten von Bauteilen - Dynamisch-thermische Kenngrößen - Berechnungsverfahren (ISO 13786:2007)
Diese Norm legt die Kenngrößen fest, die mit dem dynamisch thermischen Verhalten von kompletten Bau¬teilen in Beziehung stehen und gibt Verfahren für ihre Berechnung an. Sie legt weiterhin fest, welche Informationen über die Baustoffe für die Anwendung des Bauteils erforderlich sind. Da die Kenngrößen von der Art abhängen, wie Baustoffe kombiniert werden, um Bauteile zu bilden, kann die Norm nicht auf Baustoffe oder unfertige Bauteile angewendet werden.
Die in dieser Norm angegebenen Definitionen können auf jedes Bauteil angewendet werden. Ein verein¬fachtes Berechnungsverfahren wird für ebene Bauteile, die aus ebenen Schichten homogener oder weit¬gehend homogener Baustoffe zusammengesetzt sind, angegeben.
Anhang A enthält vereinfachte Regeln für die Berechnung der wirksamen Wärmekapazitäten für einige Sonderfälle. Die Verfahren in Anhang A eignen sich insbesondere zur Bestimmung der dynamisch-thermischen Kenngrößen, die für die Bewertung des Heizenergiebedarfs benötigt werden. Diese Näherungs¬werte genügen jedoch nicht für eine Produktkennzeichnung.
Anhang B vermittelt Grundlagen des Verfahrens und führt Anwendungsbeispiele für die in dieser Norm definierten dynamisch thermischen Kenngrößen auf.
Anhang C enthält Hinweise für das Programmieren des Berechnungsverfahrens.
Anhang D enthält Berechnungsbeispiele für ein Bauteil.
Performance thermique des composants de bâtiment - Caractéristiques thermiques dynamiques - Méthodes de calcul (ISO 13786:2007)
L'ISO 13786:2007 spécifie les caractéristiques relatives au comportement thermique dynamique d'un composant de bâtiment à l'état fini et fournit des méthodes pour le calcul de ces caractéristiques. Elle spécifie également l'information requise sur les matériaux de construction, pour l'utilisation du composant de bâtiment. Les caractéristiques étant dépendantes de la façon dont les matériaux sont combinés pour constituer des composants de bâtiment, l'ISO 13786:2007 ne s'applique pas à des matériaux de bâtiment ou à des composants de bâtiment inachevés.
Les définitions données dans l'ISO 13786:2007 sont applicables à tout composant de bâtiment. Une méthode de calcul simplifiée est donnée pour des composants plans constitués de couches planes homogènes ou quasi homogènes.
L'Annexe A spécifie des méthodes simplifiées pour l'estimation de la capacité thermique dans certains cas limités. En particulier, ces méthodes conviennent pour calculer les propriétés thermiques dynamiques nécessaires à l'estimation des besoins en énergie. Cependant, ces approximations ne conviennent pas pour caractériser des produits.
L'Annexe B donne les principes de base et des exemples d'application des caractéristiques thermiques dynamiques définies dans l'ISO 13786:2007.
L'Annexe C fournit des informations pour la programmation de la méthode de calcul.
L'Annexe D donne des exemples de calcul pour un composant de bâtiment.
Toplotne značilnosti delov stavb - Dinamične toplotne značilnosti - Računske metode (ISO 13786:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2008
1DGRPHãþD
SIST EN ISO 13786:2000
7RSORWQH]QDþLOQRVWLGHORYVWDYE'LQDPLþQHWRSORWQH]QDþLOQRVWL5DþXQVNH
PHWRGH ,62
Thermal performance of building components -- Dynamic thermal characteristics --
Calculation methods (ISO 13786:2007)
Wärmetechnisches Verhalten von Bauteilen - Dynamisch-thermische Kenngrößen -
Berechnungsverfahren (ISO 13786:2007)
Performance thermique des composants de bâtiment - Caractéristiques thermiques
dynamiques - Méthodes de calcul (ISO 13786:2007)
Ta slovenski standard je istoveten z: EN ISO 13786:2007
ICS:
91.120.10 Toplotna izolacija stavb Thermal insulation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 13786
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2007
ICS 91.060.01; 91.120.10 Supersedes EN ISO 13786:1999
English Version
Thermal performance of building components - Dynamic thermal
characteristics - Calculation methods (ISO 13786:2007)
Performance thermique des composants de bâtiment - Wärmetechnisches Verhalten von Bauteilen - Dynamisch-
Caractéristiques thermiques dynamiques - Méthodes de thermische Kenngrößen - Berechnungsverfahren (ISO
calcul (ISO 13786:2007) 13786:2007)
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 13786:2007: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Foreword
This document (EN ISO 13786:2007) 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 13786:1999.
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 13786:2007 has been approved by CEN as a EN ISO 13786:2007 without any modification.
INTERNATIONAL ISO
STANDARD 13786
Second edition
2007-12-15
Thermal performance of building
components — Dynamic thermal
characteristics — Calculation methods
Performance thermique des composants de bâtiment —
Caractéristiques thermiques dynamiques — Méthodes de calcul
Reference number
ISO 13786:2007(E)
©
ISO 2007
ISO 13786:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2007
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved
ISO 13786:2007(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and units . 2
3.1 Terms and definitions. 2
3.2 Symbols and units. 5
3.3 Subscripts . 6
3.4 Other symbols. 6
4 Period of the thermal variations. 6
5 Data required. 6
6 Heat transfer matrix of a multi-layer component. 7
6.1 General. 7
6.2 Procedure . 7
6.3 Heat transfer matrix of a homogeneous layer . 7
6.4 Heat transfer matrix of plane air cavities . 8
6.5 Heat transfer matrix of a building component. 8
7 Dynamic thermal characteristics . 8
7.1 Characteristics for any component . 8
7.2 Characteristics for components consisting of plane and homogeneous layers. 8
8 Report . 10
8.1 Calculation report . 10
8.2 Summary of results . 10
Annex A (normative) Simplified calculation of the heat capacity . 11
Annex B (informative) Principle of the method and examples of applications. 13
Annex C (informative) Further information for computer programming . 17
Annex D (informative) Examples . 19
Bibliography . 22
ISO 13786:2007(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 13786 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 2, Calculation methods.
This second edition cancels and replaces the first edition (ISO 13786:1999), which has been technically
revised.
The following principal changes have been made to the first edition:
⎯ all equations in Clause 3 have been reviewed and corrected as appropriate; the definition of heat capacity
(3.1.1.5) has been modified;
⎯ all equations in 7.2.1 and 7.2.2 have been reviewed and corrected as appropriate;
⎯ 7.2.4 contains a new equation for periodic thermal transmittance, and a new note;
⎯ Equation (A.4) has been corrected;
⎯ B.2 has undergone minor revisions;
⎯ Table C.1 has been added;
⎯ Annex D contains amended examples to align with changes to the formulae in the main body of the text.
iv © ISO 2007 – All rights reserved
ISO 13786:2007(E)
Introduction
This International Standard provides the means (in part) to assess the contribution that building products and
services make to energy conservation and to the overall energy performance of buildings.
The dynamic thermal characteristics of a building component describe the thermal behaviour of the
component when it is subject to variable boundary conditions, i.e. variable heat flow rate or variable
temperature on one or both of its boundaries. In this International Standard, only sinusoidal boundary
conditions are considered: boundaries are submitted to sinusoidal variations of temperature or heat flow rate.
The properties considered are thermal admittances and thermal dynamic transfer properties, relating cyclic
heat flow rate to cyclic temperature variations. Thermal admittance relates heat flow rate to temperature
variations on the same side of the component. Thermal dynamic transfer properties relate physical quantities
on one side of the component to those on the other side. From the aforementioned properties, it is possible to
define the heat capacity of a given component which quantifies the heat storage property of that component.
The dynamic thermal characteristics defined in this International Standard can be used in product
specifications of complete building components.
The dynamic thermal characteristics can also be used in the calculation of:
⎯ the internal temperature in a room;
⎯ the daily peak power and energy needs for heating or cooling;
⎯ the effects of intermittent heating or cooling, etc.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.