BS EN 16798-7-2017 Energy performance of buildings Ventilation for buildings Calculation methods for the determination of air flow rates in buildings including infiltration (Module.pdf

1、Energy performance of buildings Ventilation for buildingsPart 7: Calculation methods for the determination of air flow rates in buildings including infiltration (Modules M5-5)BS EN 16798-7:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EU

2、ROPENNE EUROPISCHE NORM EN 16798-7 June 2017 ICS 91.120.10; 91.140.30 Supersedes EN 15242:2007English Version Energy performance of buildings - Ventilation for buildings - Part 7: Calculation methods for the determination of air flow rates in buildings including infiltration (Modules M5-5) Performan

3、ce nergtique des btiments - Ventilation des btiments - Partie 7 : Mthodes de calcul pour la dtermination des dbits dair dans les btiments y compris les infiltrations (Modules M5-5) Energieeffizienz von Gebuden - Lftung von Gebuden - Teil 7: Berechnungsmethoden zur Bestimmung der Luftvolumenstrme in

4、Gebuden einschlielich Infiltration (Modul M5-5) 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 alt

5、eration. 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 ma

6、de 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, Esto

7、nia, 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

8、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 16798-7:2017 ENational foreword

9、This British Standard is the UK implementation of EN 16798-7:2017. It supersedes BS EN 15242:2007, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/2, Ventilation for buildings, heating and hot water services.A list of organizations represented on t

10、his 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 Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 85877 2IC

11、S 91.120.10; 91.140.30Compliance 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 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDA

12、RDBS EN 16798-7:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16798-7 June 2017 ICS 91.120.10; 91.140.30 Supersedes EN 15242:2007English Version Energy performance of buildings - Ventilation for buildings - Part 7: Calculation methods for the determination of air flow rates in buildings i

13、ncluding infiltration (Modules M5-5) Performance nergtique des btiments - Ventilation des btiments - Partie 7 : Mthodes de calcul pour la dtermination des dbits dair dans les btiments y compris les infiltrations (Modules M5-5) Energieeffizienz von Gebuden - Lftung von Gebuden - Teil 7: Berechnungsme

14、thoden zur Bestimmung der Luftvolumenstrme in Gebuden einschlielich Infiltration (Modul M5-5) 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

15、 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, Frenc

16、h, 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,

17、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,

18、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 worldwide for CEN national Member

19、s. Ref. No. EN 16798-7:2017 EBS EN 16798-7:2017EN 16798-7:2017 (E) 2 Contents Page European foreword . 6 Introduction 9 1 Scope . 11 Table 1 Position of this standard (in casu M51, M55, M56, M58) within the modular structure of the set of EPB standards . 12 2 Normative references . 13 3 Terms and de

20、finitions 14 4 Symbols and subscripts . 15 4.1 Symbols 15 Table 2 Symbols and units . 15 4.2 Subscripts 17 Table 3 Subscripts . 17 5 Brief description of the methods 18 5.1 Output of the methods 18 5.2 General description of the methods 18 5.3 Selection criteria between the methods 19 6 Calculation

21、method, method 1 Determination of air flow rates based on detailed building characteristics . 19 6.1 Output data . 19 Table 4 Output data of method 1 . 19 6.2 Calculation intervals . 20 6.3 Input data 20 6.3.1 General . 20 6.3.2 Product data . 21 Table 5 Product technical input data list 21 6.3.3 Sy

22、stem design data 22 Table 6 Identifiers for VENT_SYS_OP 22 Table 7 Process design input data list . 22 Table 8 Identifiers for SUP_AIR_TEMP_CTRL 24 Table 9 Identifiers for SUP_AIR_FLW_CTRL . 24 6.3.4 Operating conditions 24 Table 10 Operating conditions data list 24 6.3.5 Constants and physical data

23、 . 26 Table 11 Constants and physical data . 26 6.3.6 Input data from Annex A (Annex B). 26 6.4 Calculation procedure, method 1 . 26 6.4.1 Applicable time intervals and states of operation . 26 6.4.2 Operating conditions calculation . 26 BS EN 16798-7:2017EN 16798-7:2017 (E) 3 6.4.3 Calculation of a

24、ir flow rates 28 7 Method 2 Determination of air flow rates based on statistical approach 38 7.1 Output data . 38 Table 12 Output data of method 2 . 39 7.2 Calculation intervals 39 7.3 Input data 39 7.4 Calculation procedure, method 2 39 7.4.1 General . 39 7.4.2 Description of the statistically base

25、d simplified method . 40 7.4.3 Justification of the method 40 8 Quality control . 40 9 Compliance check . 41 Annex A (normative) Input and method selection data sheet Template 42 A.1 General . 42 A.2 References . 43 Table A.1 References . 43 A.3 Input data method 1 43 A.3.1 Product description data

26、. 43 A.3.2 Product technical data 43 A.3.2.1 Discharge coefficient for vents, air terminal devices, windows 43 A.3.2.2 Airflow exponent for vents, air terminal devices, windows . 43 A.3.2.3 Combustion air flows factors 44 Table A.2 Data for appliance system factor 44 Table A.3 Data for fuel flow fac

27、tor . 44 A.3.2.4 Mechanical ventilation . 44 Table A.4 Values for fctrl45 Table A.5 Values for fsys45 A.3.3 System design data . 45 A.3.3.1 Supply air temperature control . 45 A.3.3.2 Exposure to wind 45 Table A.6 Identifiers for SHIELD_CLASS . 45 A.3.3.3 Pressure coefficients associated to an air f

28、low path 45 Table A.7 Dimensionless wind pressures coefficients . 46 Table A.8 Dimensionless wind pressures coefficients for ventilation zone that cannot be cross-ventilated (fcross= 0) . 46 A.3.3.4 Difference of wind pressure coefficients . 46 A.3.3.5 Pressure coefficient of the cowl at roof height

29、. 46 A.3.3.6 Correction coefficient for accounting for height of cowl above roof level . 46 Table A.9 Examples of Ccowl;heightvalues . 47 BS EN 16798-7:2017EN 16798-7:2017 (E) 4 A.3.3.7 Ventilation effectiveness . 47 A.3.3.8 Airing factor . 47 A.3.3.9 Cross-ventilation factor . 47 Table A.10 Cross-v

30、entilation factor 47 A.3.3.10 Number of window divisions . 48 A.3.3.11 Stack effect in passive and hybrid duct 48 A.3.3.12 Distribution of vents . 48 Table A.11 Distribution of vents 48 A.3.3.13 Reference pressure for the envelope airtightness index 48 A.3.3.14 Flow exponent through leaks 48 A.3.3.1

31、5 Leakage coefficient of the ventilation zone 48 A.3.3.16 Envelope leakage distribution 48 Table A.12 Envelope leakage distribution . 48 A.3.3.17 Typical internal doorway area 49 A.3.4 Operating conditions data 49 A.3.4.1 Maximum wind speed for cross-ventilation calculation 49 A.3.4.2 Wind speed cor

32、rection factors 49 Table A.13 Correction factor Crgh;10;site49 A.3.4.3 Ventilation system operation 49 Table A.14 Identifiers for VENT_SYS_OP . 49 A.4 Input data method 2 49 Annex B (informative) Input and method selection data sheet Default choices . 50 B.1 General . 50 B.2 References 51 Table B.1

33、References. 51 B.3 Input data method 1 51 B.3.1 Product description data . 51 B.3.2 Product technical data . 51 B.3.2.1 Discharge coefficient for vents, air terminal devices, windows 51 B.3.2.2 Airflow exponent for vents, air terminal devices, windows . 52 B.3.2.3 Combustion air flows factors . 52 T

34、able B.2 Data for appliance system factor . 52 Table B.3 Data for fuel flow factor 52 B.3.2.4 Mechanical ventilation . 53 Table B.4 Values for fctrl. 53 Table B.5 Values for fsys. 53 BS EN 16798-7:2017EN 16798-7:2017 (E) 5 B.3.3 System design data . 53 B.3.3.1 Supply air temperature control . 53 B.3

35、.3.2 Exposure to wind 54 Table B.6 Identifiers for SHIELD_CLASS . 54 B.3.3.3 Pressure coefficients associated to an air flow path 54 Table B.7 Dimensionless wind pressures coefficients . 54 Table B.8 Dimensionless wind pressures for ventilation zone that cannot be cross-ventilated (fcross= 0) . 54 B

36、.3.3.4 Difference of wind pressure coefficients . 54 B.3.3.5 Pressure coefficient of the cowl at roof height. 55 B.3.3.6 Correction coefficient for accounting for height of cowl above roof level . 55 Table B.9 Examples of Ccowl;heightvalues 55 B.3.3.7 Ventilation effectiveness 55 B.3.3.8 Airing fact

37、or 55 B.3.3.9 Cross-ventilation factor 55 Table B.10 Cross-ventilation factor 56 B.3.3.10 Number of window divisions . 56 B.3.3.11 Stack effect in passive and hybrid duct 56 B.3.3.12 Distribution of vents . 56 Table B.11 Distribution of vents 56 B.3.3.13 Reference pressure for the envelope airtightn

38、ess index . 57 B.3.3.14 Flow exponent through leaks . 57 B.3.3.15 Leakage coefficient of the ventilation zone 57 B.3.3.16 Envelope leakage distribution . 57 Table B.12 Envelope leakage distribution 57 B.3.3.17 Typical internal doorway area 58 B.3.4 Operating conditions data . 58 B.3.4.1 Maximum wind

39、 speed for cross-ventilation calculation 58 B.3.4.2 Wind speed correction factors . 58 Table B.13 Correction factor Crgh;10;site58 B.3.4.3 Ventilation system operation . 58 Table B.14 Identifiers for VENT_SYS_OP 58 B.4 Input data method 2 58 Bibliography . 59 BS EN 16798-7:2017EN 16798-7:2017 (E) 6

40、European foreword This document (EN 16798-7:2017) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endors

41、ement, at the latest by December 2017, and conflicting national standards shall be withdrawn at the latest by December 2017. 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

42、all such patent rights. This standard has been produced to meet the requirements of Directive 2010/31/EU 19 May 2010 on the energy performance of buildings (recast), referred to as “recast EPDB”. This document supersedes EN 15242:2007. This document was produced to meet the requirements of Directive

43、 2002/91/EC 16 December 2002 on energy performance of buildings referred to as “EPBD”. The revision for inclusion in the second mandate package was performed by CEN/ TC 156/ WG 21. The revision includes the following changes: rearrangement of content versus EN 15242:2007, in order to better fit in t

44、he modular structure given in EN ISO 52000-1. This document is restricted to emission and control of the ventilation air flow rates (M5-5); clarification of possibility to use 2 methods to calculate the airflow rates: method 1 based on detailed building characteristics; and method 2 using a statisti

45、cal approach complying with specific rules; in method 1, addition of several options for the calculation of the airflow rates through windows, including cross-ventilation; in method 1, calculation of the airflow rates using mass balance only; formatting according to the new rules set in prCEN/TS 166

46、29; and consideration of ISO/TC 205 work performed in the meantime. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. BS EN 16798-7:2017EN 16798-7:2017 (E) 7 For the convenience of Standards users CEN/TC 156, together wit

47、h responsible Working Group Conveners, have prepared a simple table below relating, where appropriate, the relationship between the EPBD and recast EPBD standard numbers prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”. EPBD EN Number Recast EPBD EN Number Title EN 15251 EN 167

48、981 Energy performance of buildings Ventilation for buildings - Part 1: Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics (Module M1-6) N/A CEN/TR 167982 Energy performance of

49、buildings Ventilation for buildings - Part 2: Interpretation of the requirements in EN 16798-1 - Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics (Module M1-6) EN 13779 EN 167983 Energy performance of buildings Ventilation for buildings - Part 3: For non-residential buildings Performance requirements for