BS EN 12831-3-2017 Energy performance of buildings Method for calculation of the design heat load Domestic hot water systems heat load and characterisation of needs Module M8-2 M8-.pdf

1、Energy performance of buildings Method for calculation of the design heat loadPart 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3BS EN 12831-3:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPE

2、NNE EUROPISCHE NORM EN 12831-3 July 2017 ICS 91.140.10; 91.140.65 Supersedes EN 15316-3-1:2007English Version Energy performance of buildings - Method for calculation of the design heat load - Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3 Performance n

3、ergtique des btiments - Mthode de calcul des dperditions calorifiques de base - Partie 3 : Charge thermique des systmes de production deau chaude sanitaire et caractrisation des besoins, Module M8-2, M8-3 Energetische Bewertung von Gebuden - Verfahren zur Berechnung der Energieanforderungen und Nutz

4、ungsgrade der Anlagen - Teil 3: Dimensionierung von Trinkwassererwrmungsanlagen und Bedarfsbestimmung, Modul M8-2, M8-3 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

5、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 officia

6、l 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 Au

7、stria, 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, Sp

8、ain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN 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 worldwi

9、de for CEN national Members. Ref. No. EN 12831-3:2017 ENational forewordThis British Standard is the UK implementation of EN 12831-3:2017. It supersedes BS EN 15316-3-1:2007, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/24, Heating systems and w

10、ater based cooling systems in buildings.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 Standards

11、Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 87775 9ICS 91.140.10; 91.140.65Compliance 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 July 201

12、7.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 12831-3:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12831-3 July 2017 ICS 91.140.10; 91.140.65 Supersedes EN 15316-3-1:2007English Version Energy performance of buildings - Method for calculation of

13、the design heat load - Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3 Performance nergtique des btiments - Mthode de calcul des dperditions calorifiques de base - Partie 3 : Charge thermique des systmes de production deau chaude sanitaire et caractrisat

14、ion des besoins, Module M8-2, M8-3 Energetische Bewertung von Gebuden - Verfahren zur Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen - Teil 3: Dimensionierung von Trinkwassererwrmungsanlagen und Bedarfsbestimmung, Modul M8-2, M8-3 This European Standard was approved by CEN on 27 F

15、ebruary 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

16、 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 t

17、he 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, Ir

18、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Mana

19、gement 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 12831-3:2017 EBS EN 12831-3:2017EN 12831-3:2017 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 7 2 Normative re

20、ferences . 11 3 Terms and definitions 11 4 Symbols and abbreviations 13 4.1 Symbols 13 4.2 Subscripts 14 5 Description of the methods 16 5.1 General description of the method for sizing domestic hot water systems 16 5.2 General description of the methods for calculating the energy needs for domestic

21、 hot water . 17 6 Calculation procedures 17 6.1 Output data . 17 6.2 Calculation time steps 17 6.3 Input data 18 6.3.1 General . 18 6.3.2 Product data . 18 6.3.3 System design data 19 6.3.4 Operating data and boundary 19 6.3.5 Other data . 19 6.4 Calculation procedure for sizing domestic hot water s

22、ystems 19 6.4.1 Calculation of the energy needs curve for DHW . 19 6.4.2 Energy supply 22 6.4.3 Procedure for dimensioning the DHW system 35 6.5 Calculation procedure for determining the energy needs for domestic hot water 38 6.5.1 Energy need for domestic hot water based on draw-off or load profile

23、s 38 6.5.2 Energy need for domestic hot water based on volume required 38 6.5.3 Energy need for domestic hot water based directly on floor area . 40 6.5.4 Tabulated energy need for domestic hot water 41 7 Quality control 41 8 Compliance check. 41 Annex A (normative) Template for input data . 42 A.1

24、Load profiles 42 A.2 Parameters to calculate energy needs . 42 A.3 Parameters for sizing DHW systems . 43 A.4 General values . 45 Annex B (informative) Default input data 46 B.1 Load profiles 46 B.2 Parameters to calculate energy needs . 48 B.3 Parameters for sizing DHW systems . 51 B.4 General valu

25、es . 56 BS EN 12831-3:2017EN 12831-3:2017 (E) 3 Bibliography . 57 BS EN 12831-3:2017EN 12831-3:2017 (E) 4 European foreword This document (EN 12831-3:2017) has been prepared by Technical Committee CEN/TC 228 “Heating systems and water based cooling systems in buildings”, the secretariat of which is

26、held by DIN. 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 possibilit

27、y 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 supersedes EN 15316-3-1:2007. This document has been prepared under a mandate given to CEN by the European Commission and t

28、he European Free Trade Association. The changes made to the previous edition are minor editorial corrections: a) minor improvement readability of Figure 4; b) correction of an incorrect term in Formula (14); c) correction of an incorrect symbol in Figure 14. EN 12831, Energy performance of buildings

29、 Method for the calculation of the design heat load, is composed with the following parts: Part 1: Space heating load, Module M3-3; Part 2: Explanation and justification of EN 12831-1, Module M3-3 CEN/TR; Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3;

30、Part 4: Explanation and justification of EN 12831-3, Module M8-2, M8-3 CEN/TR. 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

31、, 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.

32、BS EN 12831-3:2017EN 12831-3:2017 (E) 5 Introduction CEN/TC 228 deals with heating systems in buildings. Subjects covered by CEN/TC 228 are: energy performance calculation for heating systems; inspection of heating systems; design of heating systems; installation and commissioning of heating systems

33、. This European Standard was developed to cover hourly and minutely time-steps. This European Standard is part of a series of standards aiming at international harmonization of the methodology for the assessment of the energy performance of buildings, called “set of EPB standards”. All EPB standards

34、 follow specific rules to ensure overall consistency, unambiguity and transparency. All EPB standards provide a certain flexibility with regard to the methods, the required input data and references to other EPB standards, by the introduction of a normative template in Annex A and Annex B with infor

35、mative default choices. For the correct use of this standard a normative template is given in Annex A to specify these choices. Informative default choices are provided in Annex B. Use by or for regulators: In case the standard is used in the context of national or regional legal requirements, manda

36、tory choices may be given at national or regional level for such specific applications. These choices (either the informative default choices from Annex B or choices adapted to national / regional needs, but in any case following the template of this Annex A) can be made available as national annex

37、or as separate (e.g. legal) document (national data sheet). NOTE So in this case: the regulators will specify the choices; the individual user will apply the standard to assess the energy performance of a building, and thereby use the choices made by the regulators. Topics addressed in this standard

38、 can be subject to public regulation. Public regulation on the same topics can override the default values in Annex B of this standard. Public regulation on the same topics can even, for certain applications, override the use of this standard. Legal requirements and choices are in general not publis

39、hed in standards but in legal documents. In order to avoid double publications and difficult updating of double documents, a national annex may refer to the legal texts where national choices have been made by public authorities. Different national annexes or national data sheets are possible, for d

40、ifferent applications. It is expected, if the default values, choices and references to other EPB standards in Annex B are not followed due to national regulations, policy or traditions, that: national or regional authorities prepare data sheets containing the choices and national or regional values

41、, according to the model in Annex A. In this case the national annex (e.g. NA) refers to this text; or, by default, the national standards body will consider the possibility to add or include a national annex in agreement with the template of Annex A, in accordance to the legal documents that give n

42、ational or regional values and choices. BS EN 12831-3:2017EN 12831-3:2017 (E) 6 Further target groups are parties wanting to motivate their assumptions by classifying the building energy performance for a dedicated building stock. More information is provided in the Technical Report accompanying thi

43、s standard (EN 12831-4). BS EN 12831-3:2017EN 12831-3:2017 (E) 7 1 Scope This European Standard describes a method to calculate the power and the storage volume required for the dimensioning of domestic hot water systems (DHW). The applicability ranges from direct water heaters (no storage volume an

44、d a comparatively large effective heating power) to larger storage systems with a comparatively small heating power and large storage volumes. This European Standard is applicable to the following water storage systems: storage systems characterized by a minimal mixing zone, (such as stratified char

45、ging storage tanks or storage tanks with external heat exchangers): these systems are nominated in this standard as “charging storage systems”; storage tank water heaters and warm water storage tanks with a pronounced mixing zone (such as DHW storage tanks with internal heat exchangers), nominated i

46、n this standard as “mixed storage systems”; and for different uses. The Scope also includes standardization methods for determining the energy need for domestic hot water. This European Standard covers the domestic hot water needs in buildings. The calculation of the energy needs for DHW-Systems app

47、lies to residential and non-residential buildings, a building or a zone of a building. Figure 1 shows the relative position of this standard within the set of EPB standards in the context of the modular structure as set out in EN ISO 52000-1. NOTE 1 In CEN ISO/TR 52000-2 the same table can be found,

48、 with, for each module, the numbers of the relevant EPB standards and accompanying technical reports that are published or in preparation. NOTE 2 The modules represent EPB standards, although one EPB standard may cover more than one module and one module may be covered by more than one EPB standard,

49、 for instance a simplified and a detailed method respectively. See also Clause 2 and Tables A.1 and B.1. Table 1 shows the relative position of this standard within the EPB package of standards. BS EN 12831-3:2017EN12831-3:2017(E)8Table1 Positionofthisstandard,withinthemodularstructureofthesetofEPB standardsOverarchingBuilding(as such)TechnicalBuildingSystemsSubmoduleDescriptionsDescriptionsDescriptionsHeatingCoolingVentilationHumidificationDehumidificationDomesticHot waterLightingBuildingautomationandcontrolElectricit