Energy performance of buildings - Ventilation for buildings - Part 10: Interpretation of the requirements in EN 16798-9 - Calculation methods for energy requirements of cooling systems (Module M4-1,M4-4, M4-9) - General

This Technical Report refers to the standard FprEN 16798-9.
It contains information to support the correct understanding, use and national adaptation this standard.

Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 10: Interpretation der Anforderungen der EN 16798-9 - Berechnungsmethoden für den Energiebedarf von Kühlsystemen (Module M4-1, M4-4, M4-9) - Allgemeines

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 10 : Interprétation des exigences de la norme EN 16798-9 - Méthodes de calcul des besoins énergétique des systèmes de refroidissement (Modules M4-1,M4-4, M4-9) - Généralités

Le présent rapport technique fait référence à l'EN 16798-9.
Il contient des informations permettant d’assurer une bonne compréhension, utilisation et adaptation au niveau national de cette norme.

Energijske lastnosti stavb - Prezračevanje stavb - 10. del: Razlaga in utemeljitev EN 16798-9 - Metode za izračun potrebne energije za hladilne sisteme - Moduli M4-1, M4-4, M4-9 - Splošno

To tehnično poročilo se nanaša na standard EN 16798-9.
Vsebuje informacije za pomoč pri pravilnem razumevanju, uporabi in nacionalni prilagoditvi tega standarda.

General Information

Status
Published
Publication Date
20-Jun-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
21-Jun-2017
Completion Date
21-Jun-2017

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SLOVENSKI STANDARD
SIST-TP CEN/TR 16798-10:2018
01-julij-2018

(QHUJLMVNHODVWQRVWLVWDYE3UH]UDþHYDQMHVWDYEGHO5D]ODJDLQXWHPHOMLWHY

(10HWRGH]DL]UDþXQSRWUHEQHHQHUJLMH]DKODGLOQHVLVWHPH0RGXOL0

006SORãQR

Energy performance of buildings - Ventilation for buildings - Part 10: Interpretation of the

requirements in EN 16798-9 - Calculation methods for energy requirements of cooling

systems (Module M4-1,M4-4, M4-9) - General

Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 10: Interpretation der

Anforderungen der EN 16798-9 - Berechnungsmethoden für den Energiebedarf von
Kühlsystemen (Module M4-1, M4-4, M4-9) - Allgemeines
Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 10 :

Interprétation des exigences de la norme EN 16798-9 - Méthodes de calcul des besoins

énergétique des systèmes de refroidissement (Modules M4-1,M4-4, M4-9) - Généralités

Ta slovenski standard je istoveten z: CEN/TR 16798-10:2017
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST-TP CEN/TR 16798-10:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16798-10:2018
CEN/TR 16798-10
TECHNICAL REPORT
RAPPORT TECHNIQUE
June 2017
TECHNISCHER BERICHT
ICS 91.120.10; 91.140.30
English Version
Energy performance of buildings - Ventilation for buildings
- Part 10: Interpretation of the requirements in EN 16798-
9 - Calculation methods for energy requirements of cooling
systems (Module M4-1,M4-4, M4-9) - General

Performance énergétique des bâtiments - Ventilation Energieeffizienz von Gebäuden - Lüftung von

des bâtiments - Partie 10 : Interprétation des exigences Gebäuden - Teil 10: Interpretation der Anforderungen

de la norme EN 16798-9 - Méthodes de calcul des der EN 16798-9 - Berechnungsmethoden für den

besoins énergétique des systèmes de refroidissement Energiebedarf von Kühlsystemen (Module M4-1, M4-4,

(Modules M4-1,M4-4, M4-9) - Généralités M4-9) - Allgemeines

This Technical Report was approved by CEN on 27 February 2017. It has been drawn up by the Technical Committee CEN/TC

156.

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, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR 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 Ref. No. CEN/TR 16798-10:2017 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 7

1 Scope .................................................................................................................................................................... 9

2 Normative references .................................................................................................................................... 9

3 Terms and definitions ................................................................................................................................... 9

4 Symbols, subscripts and abbreviations................................................................................................... 9

4.1 Symbols ............................................................................................................................................................... 9

4.2 Subscripts ........................................................................................................................................................... 9

4.3 Abbreviations ................................................................................................................................................... 9

5 Brief description of the methods ............................................................................................................ 10

5.1 General ............................................................................................................................................................. 10

5.2 Output of the methods ................................................................................................................................ 10

5.3 General description of the methods ...................................................................................................... 11

5.3.1 General ............................................................................................................................................................. 11

5.3.2 Method 1 (simplified) ................................................................................................................................. 11

5.3.3 Method 2 (detailed) ..................................................................................................................................... 14

5.4 Selection criteria between the methods .............................................................................................. 15

6 Calculation method 1 (simplified) ......................................................................................................... 15

6.1 Output data ..................................................................................................................................................... 15

6.2 Calculation time interval and calculation period ............................................................................. 15

6.2.1 Calculation interval ..................................................................................................................................... 15

6.2.2 Calculation period ........................................................................................................................................ 15

6.3 Input data ........................................................................................................................................................ 15

6.4 Calculation procedure, method 1 ........................................................................................................... 16

6.4.1 Applicable time intervals .......................................................................................................................... 16

6.4.2 Operating conditions calculation ........................................................................................................... 16

6.4.3 Energy calculation ....................................................................................................................................... 16

7 Calculation method 2 (detailed) ............................................................................................................. 17

7.1 Output data ..................................................................................................................................................... 17

7.2 Calculation time interval and calculation period ............................................................................. 17

7.2.1 Calculation interval ..................................................................................................................................... 17

7.2.2 Calculation period ........................................................................................................................................ 17

7.3 Input data ........................................................................................................................................................ 17

7.4 Calculation procedure ................................................................................................................................ 17

7.4.1 Applicable calculation intervals ............................................................................................................. 17

7.4.2 Operating conditions calculation ........................................................................................................... 18

7.4.3 Energy calculation ....................................................................................................................................... 19

8 Energy performance expression............................................................................................................. 20

9 Quality control .............................................................................................................................................. 20

10 Compliance check......................................................................................................................................... 20

11 Worked out examples, method 1 ............................................................................................................ 20

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11.1 Example 1 ........................................................................................................................................................ 20

11.1.1 Description ...................................................................................................................................................... 20

11.1.2 Calculation details ........................................................................................................................................ 24

11.1.3 Observations .................................................................................................................................................. 24

12 Worked out examples, method 2 ............................................................................................................ 25

12.1 Example 2 ........................................................................................................................................................ 25

12.1.1 Description ...................................................................................................................................................... 25

12.1.2 Calculation details ........................................................................................................................................ 36

12.1.3 Remarks and comments ............................................................................................................................. 36

12.2 Example 3 ........................................................................................................................................................ 37

12.2.1 Description ...................................................................................................................................................... 37

12.2.2 Calculation details ........................................................................................................................................ 43

12.2.3 Remarks and comments ............................................................................................................................. 43

13 Validation of the calculation procedures ............................................................................................. 43

14 Ventilative cooling ........................................................................................................................................ 43

14.1 General ............................................................................................................................................................. 43

14.2 Method .............................................................................................................................................................. 43

14.2.1 Hourly calculation ........................................................................................................................................ 43

14.2.2 Monthly calculation ..................................................................................................................................... 44

Annex A (informative) Input and method selection data sheet — Template ......................................... 45

A.1 General ............................................................................................................................................................. 45

A.2 References ....................................................................................................................................................... 45

A.3 Title of A.3 ....................................................................................................................................................... 45

A.4 Title of A.4 ....................................................................................................................................................... 45

Annex B (informative) Input and method selection data sheet — Default choices ............................. 46

B.1 General ............................................................................................................................................................. 46

B.2 References ....................................................................................................................................................... 46

B.3 Title of B.3 ....................................................................................................................................................... 46

B.4 Title of B.4 ....................................................................................................................................................... 46

Annex C (informative) System overview and required functionalities .................................................... 47

Annex D (informative) Calculation examples .................................................................................................... 48

D.1 Spreadsheet .................................................................................................................................................... 48

D.2 Example 1 ........................................................................................................................................................ 48

D.3 Example 2 ........................................................................................................................................................ 54

Bibliography ................................................................................................................................................................. 63

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European foreword

This document (CEN/TR 16798-10:2017) has been prepared by Technical Committee CEN/TC 156

“Ventilation for buildings”, the secretariat of which is held by BSI.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] 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 and the

European Free Trade Association.

This document 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”.

For the convenience of Standards users CEN/TC 156, together with responsible Working Group

Convenors, 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 Recast EPBD EN
Title
Number Number
Energy performance of buildings – Ventilation for buildings –
Part 1: Indoor environmental input parameters for design
EN 15251 EN 16798-1 and assessment of energy performance of buildings
addressing indoor air quality, thermal environment, lighting
and acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 2: Interpretation of the requirements in EN 16798-1 –
Indoor environmental input parameters for design and
N/A CEN/TR 16798-2
assessment of energy performance of buildings addressing
indoor air quality, thermal environment, lighting and
acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 3: For non-residential buildings – Performance
EN 16798-3
requirements for ventilation and room-conditioning systems
EN 13779
(Modules M5-1, M5-4)
Energy performance of buildings – Ventilation for buildings –
Part 4: Interpretation of the requirements in EN 16798- 3 –
N/A CEN/TR 16798-4 For non-residential buildings – Performance requirements
for ventilation and room-conditioning systems (Modules M5-
1, M5-4)
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Energy performance of buildings – Ventilation for buildings –
Part 5-1: Calculation methods for energy requirements of
ventilation and air conditioning systems (Modules M5-6, M5-
EN 15241 EN 16798-5-1
8, M6-5, M6-8, M7-5, M7-8) – Method 1: Distribution and
generation
Energy performance of buildings – Ventilation for buildings –
Part 5-2: Calculation methods for energy requirements of
ventilation systems (Modules M5-6.2, M5-8.2) – Method 2:
EN 15241 EN 16798-5-2
Distribution and generation
Energy performance of buildings – Ventilation for buildings –
Part 6: Interpretation of the requirements in EN 16798-5–1
N/A CEN/TR 16798-6 and EN 16798-5-2 – Calculation methods for energy
requirements of ventilation and air conditioning systems
(Modules M5-6, M5-8, M 6-5, M6-8 , M7-5, M7-8)
Energy performance of buildings – Ventilation for buildings –
Part 7: Calculation methods for the determination of air flow
EN 15242 EN 16798-7
rates in buildings including infiltration (Module M5-5)
Energy performance of buildings – Ventilation for buildings –
Part 8: Interpretation of the requirements in EN 16798-7 –
N/A CEN/TR 16798-8
Calculation methods for the determination of air flow rates in
buildings including infiltration – (Module M5-5)
Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-9 Part 9: Calculation methods for energy requirements of
cooling systems (Modules M4-1, M4-4, M4-9) – General
Energy performance of buildings – Ventilation for buildings –
Part 10: Interpretation of the requirements in EN 16798-9 –
Calculation methods for energy requirements of cooling
N/A CEN/TR 16798-10
systems (Module M4-1,M4-4, M4-9) – General
Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-13 Part 13: Calculation of cooling systems (Module M4-8) –
Generation
Energy performance of buildings – Ventilation for buildings –

EN 15243 CEN/TR 16798-14 Part 14: Interpretation of the requirements in EN 16798-13 –

Calculation of cooling systems (Module M4-8) – Generation
Energy performance of buildings – Ventilation for buildings –
N/A EN 16798-15 Part 15: Calculation of cooling systems (Module M4-7) –
Storage
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Energy performance of buildings – Ventilation for buildings –
N/A CEN/TR 16798-16 Part 16: Interpretation of the requirements in EN 16798-15 –
Calculation of cooling systems (Module M4-7) – Storage
Energy performance of buildings – Ventilation for buildings –
EN 15239 and
EN 16798-17 Part 17: Guidelines for inspection of ventilation and air-
EN 15240
conditioning systems (Module M4-11, M5-11, M6-11, M7-11)
Energy performance of buildings – Ventilation for buildings –
Part 18: Interpretation of the requirements in EN 16798-17 –
N/A CEN/TR 16798-18
Guidelines for inspection of ventilation and air-conditioning
systems (Module M4-11, M5-11, M6-11, M7-11)
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Introduction
The set of EPB standards, Technical Reports and supporting tools

In order to facilitate the necessary overall consistency and coherence, in terminology, approach,

input/output relations and formats, for the whole set of EPB-standards, the following documents and

tools are available:

a) a document with basic principles to be followed in drafting EPB-standards: CEN/TS 16628, Energy

Performance of Buildings — Basic Principles for the set of EPB standards [3];

b) a document with detailed technical rules to be followed in drafting EPB-standards; CEN/TS 16629,

Energy Performance of Buildings — Detailed Technical Rules for the set of EPB-standards [4];

c) the detailed technical rules are the basis for the following tools:

1) a common template for each EPB-standard, including specific drafting instructions for the

relevant clauses;

2) a common template for each technical report that accompanies an EPB standard or a cluster of

EPB standards, including specific drafting instructions for the relevant clauses;

3) a common template for the spreadsheet that accompanies each EPB standard, to demonstrate

the correctness of the EPB calculation procedures.

Each EPB-standard follows the basic principles and the detailed technical rules and relates to the

overarching EPB-standard, EN ISO 52000-1.

One of the main purposes of the revision of the EPB-standards is to enable that laws and regulations

directly refer to the EPB-standards and make compliance with them compulsory. This requires that the

set of EPB-standards consists of a systematic, clear, comprehensive and unambiguous set of energy

performance procedures. The number of options provided is kept as low as possible, taking into

account national and regional differences in climate, culture and building tradition, policy and legal

frameworks (subsidiarity principle). For each option, an informative default option is provided

(Annex B).
Rationale behind the EPB technical reports

There is a risk that the purpose and limitations of the EPB standards will be misunderstood, unless the

background and context to their contents – and the thinking behind them – is explained in some detail

to readers of the standards. Consequently, various types of informative content are recorded and made

available for users to properly understand, apply and nationally or regionally implement the EPB

standards.

If this explanation would have been attempted in the standards themselves, the result is likely to be

confusing and cumbersome, especially if the standards are implemented or referenced in national or

regional building codes.

Therefore each EPB standard is accompanied by an informative technical report, like this one, where all

informative content is collected, to ensure a clear separation between normative and informative

contents (see CEN/TS 16629 [4]):

— to avoid flooding and confusing the actual normative part with informative content;

— to reduce the page count of the actual standard; and
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— to facilitate understanding of the set of EPB standards.

This was also one of the main recommendations from the European CENSE project [10] that laid the

foundation for the preparation of the set of EPB standards.
This Technical Report

This Technical Report accompanies the EPB standard on the general part of the calculation of the

energy performance of cooling systems. It relates to the standard EN 16798-9, which forms part of a set

of standards related to the evaluation of the energy performance of buildings (EPB).

The role and the positioning of the accompanied standard in the set of EPB standards is defined in the

Introduction to the standard.
Accompanying spreadsheet(s)

Concerning the accompanied standard EN 16798-9, the following spreadsheets were produced:

— on EN 16798-9, for the simplified method;
— on EN 16798-9, for the detailed method;

— on EN 16798-9, for the detailed method, as a master in combination with those on EN 15316-2,

EN 15316-3, EN 16798-5-1, EN 16798-7, EN 16798-13 and EN 16798-15.

In this Technical Report, examples of each of these calculation sheets are included.

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1 Scope
This Technical Report refers to the standard EN 16798-9.

It contains information to support the correct understanding, use and national adaptation of this

standard.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE More information on the use of EPB module numbers for normative references between EPB standards

is given in CEN ISO/TR 52000-2.

EN 16798-9:2017, Energy performance of buildings — Ventilation for buildings — Part 9: Calculation

methods for energy requirements of cooling systems (Module M4-1, M4-4, M4-9) — General

EN ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1:

General framework and procedures (ISO 52000-1:2017)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 16798-9:2017 apply.

NOTE More information on some key EPB terms and definitions is given in CEN ISO/TR 52000-2.

4 Symbols, subscripts and abbreviations
4.1 Symbols

For the purposes of this document, the symbols as mentioned and given in the accompanied EPB

standard, EN 16798-9, apply.
More information on key EPB symbols is given in CEN ISO/TR 52000-2.
4.2 Subscripts

For the purposes of this document, the subscripts as mentioned and given in the accompanied EPB

standard, EN 16798-9, apply.
More information on key EPB subscripts is given in CEN ISO/TR 52000-2.
4.3 Abbreviations

For the purposes of this document, the abbreviations as mentioned and given in the accompanied EPB

standard, EN 16798-9, apply.
More information on key EPB abbreviations is given in CEN ISO/TR 52000-2.
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5 Brief description of the methods
5.1 General

The accompanied EPB standard, EN 16798-9, covers two different methods for the calculation of the

energy performance of cooling systems: a simplified and a detailed method.

The simplified method 1 requires minimum input date and treats certain areas (like the emission and

distribution heat losses and auxiliary energy) by the use of overall factors. The detailed method 2 refers

to the outputs provided by the respective standards for the calculation of the losses and the auxiliary

energy at all stages, and therefore needs considerably more input data.
5.2 Output of the methods
The simplified method 1 covers the calculation of:
— the required cooling generation outlet temperature;

— the required cooling energy to be extracted by the cooling generation system, based on the

requirements of the thermal zones and the air handling units (AHUs) calculated according to the

module M2-2 and M5-8 standards;

— the cooling energy extracted from the distribution systems, based on the cooling energy extracted

by the generation system according to the M4-8 standard, considering possible priorities;

— the cooling energy extracted from the thermal zones and the AHUs, considering the emission losses

according to the M4-5 standard and the distribution losses according to the M4-6 standard.

In addition to the above, the detailed method 2 covers the calculation of:

— the flow and return water temperatures in the cooling distribution systems, based on the required

values;
— the volume flow rates of the cooling distribution systems;

— possible storage effects according to the M4-7 standard cooling energy extracted from the

distribution systems.
The interval of the output can be:
— yearly;
— monthly;
— hourly;
— bin.

Based on both methods, there are formulae given for the calculation of technical system performance

indicators for cooling systems.
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5.3 General description of the methods
5.3.1 General

In this and all subsequent calculation methods, cooling energy is defined as extracted heat in the exact

physical meaning. Positive values mean heat taken out of the system. Heat flows generally have

opposite direction of the related flow rates.
5.3.2 Method 1 (simplified)
This calculation method:
— defines ho
...

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