Energy performance of buildings — Overarching EPB assessment — Part 2: Explanation and justification of ISO 52000-1

ISO/TR 52000-2:2017 refers to the overarching EPB-standard, ISO 52000‑1[1]. It contains information to support the correct understanding, use and national implementation of ISO 52000‑1. This includes: - explanation on the procedures and background information and justification of the choices that have been made; - reporting on validation of calculation procedures given in the standard; - explanation for the user and for national standards writers involved with implementation of the set of EPB standards, including detailed examples.

Performance énergétique des bâtiments — Évaluation globale de la PEB — Partie 2: Explication et justification de l'ISO 52000-1

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Status
Published
Publication Date
20-Jun-2017
Current Stage
6060 - International Standard published
Start Date
21-Jun-2017
Completion Date
21-Jun-2017
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ISO/TR 52000-2:2017 - Energy performance of buildings -- Overarching EPB assessment
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TECHNICAL ISO/TR
REPORT 52000-2
First edition
2017-06
Energy performance of buildings —
Overarching EPB assessment —
Part 2:
Explanation and justification
of ISO 52000-1
Performance énergétique des bâtiments — Évaluation globale
de la PEB —
Partie 2: Explication et justification de l’ISO 52000-1
Reference number
ISO/TR 52000-2:2017(E)
ISO 2017
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ISO/TR 52000-2:2017(E)
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ii © ISO 2017 – All rights reserved
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ISO/TR 52000-2:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................vi

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

3.1 Buildings ....................................................................................................................................................................................................... 2

3.2 Indoor and outdoor conditions................................................................................................................................................. 3

3.3 Technical building systems ........................................................................................................................................................... 3

3.4 Energy ............................................................................................................................................................................................................. 4

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 .................. ....................................................... 5

4 Symbols, units, subscripts and abbreviations........................................................................................................................ 5

4.1 Symbols ......................................................................................................................................................................................................... 5

4.2 Subscripts .................................................................................................................................................................................................... 6

4.3 Abbreviations ........................................................................................................................................................................................... 6

5 Description of the overarching framework and procedures .................................................................................. 6

5.1 Output of the method ........................................................................................................................................................................ 6

5.2 General description of the procedures and routing ................................................................................................ 7

5.3 Selection criteria between the methods ........................................................................................................................... 7

5.4 The over-arching reference modular structure .......................................................................................................... 7

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 Output data .............................................................................................................................................................................................22

7.2 Calculation intervals and calculation period ......... .....................................................................................................22

7.2.1 Calculation interval .....................................................................................................................................................22

7.2.2 Calculation period ...................................................................... ..................................................................................25

7.3 Input data .................................................................................................................................................................................................25

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ISO/TR 52000-2:2017(E)

7.3.1 Product data ...................................................................... ................................................................................................25

7.3.2 System design data .................. ......................................................................................................................... ...........25

7.3.3 Operating conditions .................................................................................................................................................25

7.3.4 Constants and physical data................................................................................................................................27

7.3.5 Other data ...........................................................................................................................................................................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 Other data ...........................................................................................................................................................................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 EPB in each space ............................................................32

9.3 Useful floor area and air volume ..........................................................................................................................................32

9.4 Normalization to building size ...............................................................................................................................................33

9.4.1 Reference size ..................................................................................................................................................................33

9.4.2 Normalization ...................................................................... ............................................................................................35

9.4.3 Reference floor area ...................................................................................................................................................35

9.5 Assessment boundary and perimeters ...........................................................................................................................35

9.5.1 General principles ........................................................................................................................................................35

9.5.2 Assessment boundary for multiple buildings ......................................................................................36

9.6 Overall energy performance .....................................................................................................................................................36

9.6.1 Weighted overall energy balance ....................................................................................................................36

9.6.2 Primary energy factors ............................................................................................................................................37

9.6.3 Greenhouse gas emission factors ...................................................................................................................39

9.6.4 Additional weighting factors ..............................................................................................................................39

9.6.5 Costs factors ......................................................................................................................................................................39

9.6.6 Weighting factors for exported energy ......................................................................................................39

9.6.7 Energy flows .....................................................................................................................................................................42

9.7 Share of renewable energy ........................................................................................................................................................43

9.7.1 General...................................................................................................................................................................................43

9.7.2 Amount of primary energy from renewable source E ........................................................

P;ren 43

9.7.3 Amount of total primary energy E .........................................................................................................

Ptot 43

9.7.4 Examples of RER calculation ..............................................................................................................................43

9.8 Energy performance indicators for technical building systems ................................................................45

9.9 Calculation methods for energy performance indicators per part of a building

and/or service ......................................................................................................................................................................................45

10 Zoning ...........................................................................................................................................................................................................................46

10.1 General ........................................................................................................................................................................................................46

10.2 Thermal zones and service areas .........................................................................................................................................48

10.3 Spaces ..........................................................................................................................................................................................................48

10.4 Zoning rules ............................................................................................................................................................................................50

10.4.1 Principle ...............................................................................................................................................................................50

10.4.2 Specific zoning criteria ............................................................................................................................................51

10.5 Assignment rules ................................................................................................................................................................................52

10.5.1 Subdivision ........................................................................................................................................................................52

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ISO/TR 52000-2:2017(E)

10.5.2 Recombination ................................................................................................................................................................54

10.6 Zoning procedure ..............................................................................................................................................................................55

11 Calculation of the energy performance, routing and energy balance ........................................................55

11.1 General ........................................................................................................................................................................................................55

11.2 Overall calculation procedure (steps) ..............................................................................................................................55

11.3 Calculation principles of the recovered gains and losses ................................................................................56

11.4 Effect of building automation and control (BAC) and technical building

management (TBM) .........................................................................................................................................................................56

11.5 Climatic and external environment data .......................................................................................................................61

11.6 Overall energy performance .....................................................................................................................................................61

11.6.1 General...................................................................................................................................................................................61

11.6.2 Electricity and other energy carriers with exportation ..............................................................61

11.6.3 Energy carriers without exportation ..........................................................................................................72

11.6.4 Exported heat on-site produced and not included in thermal use of

the building ........................................................................................................................................... .............................72

12 Common overarching output – General .....................................................................................................................................73

12.1 General ........................................................................................................................................................................................................73

12.2 Tabulated overview of the amounts of energy per energy carrier and energy service ........75

12.2.1 Absolute values ..............................................................................................................................................................75

13 Additional information to the over-arching EPB standard ...................................................................................89

13.1 Worked out examples .....................................................................................................................................................................89

13.2 Application range ...............................................................................................................................................................................89

13.3 Regulation use ......................................................................................................................................................................................89

13.4 Validation test .......................................................................................................................................................................................90

13.5 Quality issues ........................................................................................................................................................................................90

Annex A (informative) Input and method selection data sheet — Template...........................................................91

Annex B (informative) Input and method selection data sheet — Default choices ..........................................93

Annex C (informative) Common subscripts ............................................................................................................................................101

Annex D (informative) Calculation of measured energy performance ......................................................................108

Annex E (informative) Calculation methods for energy performance indicators per part of a

building and/or service .........................................................................................................................................................................109

Annex F (informative) Alphabetic index of terms ............................................................................................................................116

Annex G (informative) Electrical grid related indicators .........................................................................................................117

Annex H (informative) Proposal of indicators for the assessment of nearly Zero-Energy

Buildings (NZEB) ...........................................................................................................................................................................................118

Annex I (informative) Lighting systems......................................................................................................................................................121

Annex J (informative) Calculation examples .........................................................................................................................................123

Annex K (informative) Flow diagram ............................................................................................................................................................170

Annex L (informative) List of technologies .............................................................................................................................................174

Bibliography .........................................................................................................................................................................................................................178

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ISO/TR 52000-2:2017(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.

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 may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: w w w . i s o .org/ iso/ foreword .html.

ISO/TR 52000-2 was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 371, Energy Performance of Buildings project group, in collaboration with ISO

Technical Committees TC 163, Thermal performance and energy use in the built environment, and TC 205,

Building environment design, in accordance with the Agreement on technical cooperation between ISO

and CEN (Vienna Agreement).
A list of all parts in the ISO 52000 series can be found on the ISO website.
vi © ISO 2017 – All
...

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