1、Thermal performance of buildings - Transmission and ventilation heat transfer coefficients - Calculation method (ISO 13789:2017)BS EN ISO 13789:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEANSTANDARDNORME EUROPENNE EUROPISCHE NORMEN ISO 13789 July 2017IC
2、S 91.120.10 Supersedes EN ISO 13789:2007EnglishVersionThermal performance of buildings - Transmission andventilation heat transfer coefficients - Calculation method (ISO 13789:2017) Performance thermique des btiments - Coefficients detransfert de chaleur par transmission et parrenouvellement dair- M
3、thode de calcul (ISO13789:2017)Wrmetechnisches Verhalten von Gebuden-Spezifischer Transmissions- undLftungswrmedurchgangskoeffizient -Berechnungsverfahren (ISO13789:2017)This European Standard was approved by CEN on 27 February2017.CEN members are bound to comply with the CEN/CENELEC Internal Regula
4、tions which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. T
5、his European Standard exists in three official versions (English, French, German). A version in any other language made bytranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC ManagementCentre has the same status as the officialversions.CEN member
6、s are the nationalstandards 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,
7、 Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any fo
8、rm and by any means reservedworldwide for CENnational Members.Ref. No. EN ISO 13789:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 13789:2017. It supersedes BS EN ISO 13789:2007, which is withdrawn.The UK participation in its preparation was entrusted to Technical Co
9、mmittee B/540/2, Building performance - Moisture.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British S
10、tandards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 88085 8ICS 91.120.10Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 20
11、17.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 13789:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13789 July 2017 ICS 91.120.10 Supersedes EN ISO 13789:2007English Version Thermal performance of buildings - Transmission and ventilation he
12、at transfer coefficients - Calculation method (ISO 13789:2017) Performance thermique des btiments - Coefficients de transfert de chaleur par transmission et par renouvellement dair - Mthode de calcul (ISO 13789:2017) Wrmetechnisches Verhalten von Gebuden - Spezifischer Transmissions- und Lftungswrme
13、durchgangskoeffizient - Berechnungsverfahren (ISO 13789:2017) 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 w
14、ithout 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 oth
15、er 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,
16、 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. EUROP
17、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 worldwide for CEN national Members. Ref. No. EN ISO 13789:2017 EB
18、S EN ISO 13789:2017EN ISO 13789:2017 (E) 2 European foreword This document (EN ISO 13789:2017) 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 b
19、uilding 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 January 2018 and conflicting national standards shall be withdrawn at the latest by Jan
20、uary 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 an
21、d the European Free Trade Association. This document is part of the set of standards and accompanying technical reports on the energy performance of buildings and has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association (Mandate M/480, see ref
22、erence EF3 below). Directive 2010/31/EU recasting the Directive 2002/91/EC on energy performance of buildings (EPBD, EF4) promotes the improvement of the energy performance of buildings within the European Union, taking into account all types of energy uses (heating, lighting, cooling, air condition
23、ing, ventilation) and outdoor climatic and local conditions, as well as indoor climate requirements and cost effectiveness (Article 1). The directive requires Member States to adopt measures and tools to achieve the prudent and rational use of energy resources. In order to achieve those goals, the E
24、PBD requires increasing energy efficiency and the enhanced use of renewable energies in both new and existing buildings. One tool for this is the application by Member States of minimum requirements on the energy performance of new buildings and for existing buildings that are subject to major renov
25、ation, as well as for minimum performance requirements for the building envelope if energy-relevant parts are replaced or retrofitted. Other tools are energy certification of buildings, inspection of boilers and air-conditioning systems. The use of European standards increases the accessibility, tra
26、nsparency and objectivity of the energy performance assessment in the Member States facilitating the comparison of best practices and supporting the internal market for construction products. The use of EPB standards for calculating energy performance, as well as for energy performance certification
27、 and the inspection of heating systems and boilers, ventilation and air-conditioning systems will reduce costs compared to developing different standards at national level. The first mandate to CEN to develop a set of CEN EPBD standards (M/343, EF1), to support the first edition of the EPBD (EF2) re
28、sulted in the successful publication of all EPBD related CEN standards in 2007-2008. Mandate M/480 was issued to review the mandate M/343 as the recast of the EPBD raised the need to revisit the standards and reformulate and add standards so that they become on the one hand unambiguous and compatibl
29、e, and on the other hand a clear and explicit overview of the choices, boundary conditions and input data that need to be defined at national or regional level. Such national or regional choices remain necessary, due to differences in climate, culture and building tradition, BS EN ISO 13789:2017EN I
30、SO 13789:2017 (E) 3 policy and legal frameworks. Consequently, the set of CEN EPBD standards published in 2007-2008 had to be improved and expanded on the basis of the recast of the EPBD. The EPB standards are flexible enough to allow for necessary national and regional differentiation and facilitat
31、e Member States implementation and the setting of requirements by the Member States. Further target groups are users of the voluntary common European Union certification scheme for the energy performance of non-residential buildings (EPBD article 11.9) and any other regional (e.g. pan European) part
32、ies wanting to motivate their assumptions by classifying the building energy performance for a dedicated building stock. This document supersedes EN ISO 13789:2007. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to impleme
33、nt 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, S
34、erbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. References: EF1 EPBD, Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the energy performance of buildings EF2 EPBD Mandate M/343, Mandate to CEN, CENELEC and ETSI for the e
35、laboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and estimating the environmental impact, in accordance with the terms set forth in Directive 2002/91/EC , 30 January 2004 EF3 Mandate M/480, Mandate to CEN, CENELEC and ETSI for the elab
36、oration 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), 14 December 2010 EF4 E
37、PBD, Recast of the Directive on the energy performance of buildings (2010/31/EU). 14 December 2010 Endorsement notice The text of ISO 13789:2017 has been approved by CEN as EN ISO 13789:2017 without any modification. BS EN ISO 13789:2017This page deliberately left blank ISO 13789:2017(E)Foreword ivI
38、ntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and subscripts . 44.1 Symbols . 44.2 Subscripts 45 Description of the method 55.1 Output . 55.2 General description . 56 Calculation of heat transfer coefficients 56.1 Output data 56.2 Calculation time intervals 76.
39、3 Input data 76.4 Measurement of dimensions . 86.5 Boundaries of conditioned space 87 Transmission heat transfer coefficient 107.1 Basic formula . 107.2 Mean thermal transmittance of building fabric . 107.3 Direct transmission between internal and external environments .117.4 Transmission heat trans
40、fer coefficient through the ground .127.5 Transmission heat transfer coefficient through unconditioned spaces .127.6 Heat transfer to adjacent buildings 138 Ventilation heat transfer coefficient .149 Additional conventions .149.1 General 149.2 Transmission heat transfer coefficient through the groun
41、d .149.3 Variable thermal transmittance 149.4 Air change rates of unconditioned spaces 149.5 Conventional values of surface heat transfer coefficient .1510 Report .16Annex A (normative) Input and method selection data sheet Template 17Annex B (informative) Input and method selection data sheet Defau
42、lt choices 20Annex C (normative) Temperature in an unconditioned space 23Bibliography .24 ISO 2017 All rights reserved iiiContents PageISO 13789:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and subscripts . 44.1 Symbols . 44.2 Subscripts 45
43、Description of the method 55.1 Output . 55.2 General description . 56 Calculation of heat transfer coefficients 56.1 Output data 56.2 Calculation time intervals 76.3 Input data 76.4 Measurement of dimensions . 86.5 Boundaries of conditioned space 87 Transmission heat transfer coefficient 107.1 Basic
44、 formula . 107.2 Mean thermal transmittance of building fabric . 107.3 Direct transmission between internal and external environments .117.4 Transmission heat transfer coefficient through the ground .127.5 Transmission heat transfer coefficient through unconditioned spaces .127.6 Heat transfer to ad
45、jacent buildings 138 Ventilation heat transfer coefficient .149 Additional conventions .149.1 General 149.2 Transmission heat transfer coefficient through the ground .149.3 Variable thermal transmittance 149.4 Air change rates of unconditioned spaces 149.5 Conventional values of surface heat transfe
46、r coefficient .1510 Report .16Annex A (normative) Input and method selection data sheet Template 17Annex B (informative) Input and method selection data sheet Default choices 20Annex C (normative) Temperature in an unconditioned space 23Bibliography .24 ISO 2017 All rights reserved iiiContents PageB
47、S EN ISO 13789:2017ISO 13789:2017(E)ForewordISO (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 in
48、terested 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 Electrotechni
49、cal Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document m
