ISO/TR TECHNICAL REPORT 52000-2 First edition 2017-06 Energy performance of buildings Overarching EPB assessment - Part 2: Explanation and justification 0fIS0 52000-1 Performance énergétique des batiments - Evaluation globale delaPEB- Partie 2: Explication et justification de I'iS0 52000-1 Reference number IS0/TR52000-2:2017(E) rso International Organization for Standardization @ IS0 2017 ed without license from IHS IS0/TR 52000-2:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinair PrganizationforStandardization icensee-ZHEJIANG INSToF STANDARDIZAoISQO7 -All rights reserved Not for Resale, 2017/9/12 02:37:27 etworking permitted without license from IHS IS0/TR 52000-2:2017(E) Contents Page Foreword ..vi Introduction. ..vii 1 Scope. 2 Normative references 3 Terms and definitions ..2 3.1 Buildings.. .2 3.2 Indoor and outdoor conditions 3.3 Technical building systems. 3 3.4 Energy.. 3.5 Energy performance. 4 3.6 Energy calculation.. ..4 3.7 General information on terms and definitions 4 3.7.1 General. .4 3.7.2 Overarching terms and definitions ..4 3.7.3 Difference between definition and specification ..5 3.7.4 Undefined and/or unspecified policy related terms 4 Symbols, units, subscripts and abbreviations .5 4.1 Symbols ..5 4.2 Subscripts. 4.3 Abbreviations. ..6 5 Description of the overarching framework and procedures .6 5.1 Output of the method 5.2 General description of the procedures and routing .7 5.3 Selection criteria between the methods 1 5.4 The over-arching reference modular structure. 1 5.4.1 Purpose. .7 5.4.2 Systematic modular structure of the standards .7 5.4.3 The connection between the modules - step by step implementation .8 5.4.4 Systematic consecutive numbering of the standards .10 6 Overarching preparation steps .11 6.1 General .11 6.2 List of types and categories. .13 6.2.1 Type of object .13 6.2.2 Building category and space categories. ..14 6.2.3 Type of application .15 6.2.4 Types of assessment .15 6.2.5 Building services. ..16 6.3 Identification of types and categories for a specific case ..17 6.4 Example cases. .17 6.4.1 General .17 6.4.2 Example case 1 ..18 6.4.3 Example case 2 .19 6.4.4 Example case 3 ..19 6.4.5 Example case 4 .20 6.4.6 Example case 5 21 6.4.7 Example case 6 .22 7 Calculated energy performance of buildings .22 7.1 Outputdata 22 7.2 Calculation intervals and calculation period. .22 7.2.1 Calculation interval .22 7.2.2 Calculation period. .25 7.3 Inputdata 25 ntemaonalgnzation7All rights reserved iii see=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed withoutlicense from IHS Not for Resale, 2017/9/12 02:37:27 IS0/TR 52000-2:2017(E) 7.3.1 Product data. 25 7.3.2 Systemdesigndata .25 7.3.3 Operating conditions. 25 7.3.4 Constants and physical data .27 7.3.5 Otherdata 27 7.4 Description of the calculation procedure. 28 8 Measured overall energy performance and comparison with calculations .28 8.1 General. 28 8.2 Output of the method. 29 8.3 Measurement intervals and measurement period 29 8.4 Input data 30 8.4.1 Product data.. 30 8.4.2 System design data. 30 8.4.3 Operating conditions data 30 8.4.4 Constants and physical data. .31 8.4.5 Otherdata 31 8.5 Measurement procedures. 31 8.6 Calculation of the energy performance based on measured energy .31 8.7 Comparison between calculated energy performance and measured energy performance. 31 8.8 Measured energy performance reporting. .32 9 Overall assessment of the energy performance of buildings. 32 9.1 Categorization of building and/or spaces 32 9.2 Combination of building services included in E