Energy performance of buildings - Ventilation for buildings - Part 6: Interpretation of the requirements in EN 16798-5 -1 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)

This Technical Report refers to standards EN 16798 5 1 and EN 16798 5 2.
It contains information to support the correct understanding and use of these standards.
This Technical Report does not contain any normative provision.

Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 6: Interpretation der Anforderungen der EN 16798-5-1 und EN 16798-5-2 - Berechnungsmethoden für den Energiebedarf von Lüftungs- und Klimaanlagen (Module M5-6, M5-8, M6-5, M6-8, M7-5, M7-8)

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 6 : Interprétation des exigences de l'EN 16798-5-1 et de l'EN 16798-5-2 - Méthodes de calcul des besoins énergétiques des systèmes de ventilation et de conditionnement d'air (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8)

Le présent rapport technique fait référence aux normes EN 16798-5-1 et EN 16798-5-2.
Il contient des informations permettant d’assurer une compréhension et une utilisation correctes de ces normes.
Le présent rapport technique ne contient pas de disposition normative.

Energijske lastnosti stavb - Prezračevanje stavb - 6. del: Razlaga in utemeljitev EN 16798-5-1 in EN 16798-5-2 - Metode za izračun potrebne energije za sisteme prezračevanja in klimatizacije - Moduli M5-6, M5-8, M6-5, M6-8, M7-5, M7-8

To tehnično poročilo se nanaša na standarda EN 16798 5 1 in EN 16798 5 2.
Vsebuje informacije za pomoč pri pravilnem razumevanju in uporabi teh standardov.
To tehnično poročilo ne vsebuje nobenih normativnih določb.

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 16798-6:2018
01-julij-2018

(QHUJLMVNHODVWQRVWLVWDYE3UH]UDþHYDQMHVWDYEGHO5D]ODJDLQXWHPHOMLWHY(1

LQ(10HWRGH]DL]UDþXQSRWUHEQHHQHUJLMH]DVLVWHPH
SUH]UDþHYDQMDLQNOLPDWL]DFLMH0RGXOL000000

Energy performance of buildings - Ventilation for buildings - Part 6: Interpretation of the

requirements in EN 16798-5 -1 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)

Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 6: Interpretation der

Anforderungen der EN 16798-5-1 und EN 16798-5-2 - Berechnungsmethoden für den

Energiebedarf von Lüftungs- und Klimaanlagen (Module M5-6, M5-8, M6-5, M6-8, M7-5,

M7-8)
Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 6 :

Interprétation des exigences de l'EN 16798-5-1 et de l'EN 16798-5-2 - Méthodes de

calcul des besoins énergétiques des systèmes de ventilation et de conditionnement d'air

(Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8)
Ta slovenski standard je istoveten z: CEN/TR 16798-6:2017
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST-TP CEN/TR 16798-6:2018 en

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

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SIST-TP CEN/TR 16798-6:2018
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SIST-TP CEN/TR 16798-6:2018
CEN/TR 16798-6
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 6: Interpretation of the requirements in EN 16798-5
-1 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)

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

des bâtiments - Partie 6 : Interprétation des exigences Gebäuden - Teil 6: Interpretation der Anforderungen

de l'EN 16798-5-1 et de l'EN 16798-5-2 - Méthodes de der EN 16798-5-1 und EN 16798-5-2 -

calcul des besoins énergétiques des systèmes de Berechnungsmethoden für den Energiebedarf von

ventilation et de conditionnement d'air (Modules M5-6, Lüftungs- und Klimaanlagen (Module M5-6, M5-8, M6-

M5-8, M6-5, M6-8, M7-5, M7-8) 5, M6-8, M7-5, M7-8)

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 16798-6:2017 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 ................................................................................................................................................ 10

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

5.1 Output of the methods ................................................................................................................................ 10

5.2 General description of the methods ...................................................................................................... 10

5.2.1 Method 1 .......................................................................................................................................................... 10

5.2.2 Method 2 .......................................................................................................................................................... 11

5.3 Selection criteria between the methods .............................................................................................. 11

5.4 Application and implementation of the methods ............................................................................. 12

5.4.1 Method 1 .......................................................................................................................................................... 12

5.4.2 Method 2 .......................................................................................................................................................... 13

6 Calculation method 1 (EN 16798-5-1) .................................................................................................. 13

6.1 Output data ..................................................................................................................................................... 13

6.2 Calculation time interval and calculation period ............................................................................. 13

6.3 Input data ........................................................................................................................................................ 13

6.3.1 Source of data ................................................................................................................................................ 13

6.3.2 Product data ................................................................................................................................................... 14

6.3.3 System design data ...................................................................................................................................... 14

6.3.4 Operating conditions .................................................................................................................................. 14

6.3.5 Constants and physical data ..................................................................................................................... 14

6.4 Calculation procedure, method 1 ........................................................................................................... 15

6.4.1 Applicable calculation interval ............................................................................................................... 15

6.4.2 Distribution calculation ............................................................................................................................. 15

6.4.3 Generation calculation ............................................................................................................................... 18

7 Calculation method 2 (EN 16798-5-2) .................................................................................................. 35

7.1 Output data ..................................................................................................................................................... 35

7.2 Calculation interval ..................................................................................................................................... 35

7.3 Input data ........................................................................................................................................................ 36

7.3.1 Source of data ................................................................................................................................................ 36

7.3.2 Product data ................................................................................................................................................... 36

7.3.3 System design data ...................................................................................................................................... 36

7.3.4 Operating conditions .................................................................................................................................. 36

7.4 Calculation procedure ................................................................................................................................ 36

7.4.1 Applicable timestep ..................................................................................................................................... 36

7.4.2 Operating conditions calculation ........................................................................................................... 37

7.4.3 Energy calculation ....................................................................................................................................... 39

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8 Quality control ............................................................................................................................................... 43

9 Compliance check ......................................................................................................................................... 43

10 Worked out examples, method 1 ............................................................................................................ 43

10.1 Example 1 ........................................................................................................................................................ 43

10.1.1 Description ...................................................................................................................................................... 43

10.1.2 Calculation details ........................................................................................................................................ 47

10.1.3 Observations .................................................................................................................................................. 47

11 Worked out examples, method 2 ............................................................................................................ 48

11.1 Description ...................................................................................................................................................... 48

11.2 Calculation details ........................................................................................................................................ 52

11.3 Observations .................................................................................................................................................. 52

12 Validation of the calculation procedures ............................................................................................. 52

Annex A (informative) Input and method selection data sheet — Template ......................................... 53

A.1 General ............................................................................................................................................................. 53

A.2 References ....................................................................................................................................................... 53

A.3 Product description data ........................................................................................................................... 53

A.4 Product technical data ................................................................................................................................ 53

A.5 System design data ....................................................................................................................................... 53

Annex B (informative) Input and method selection data sheet — Default choices ............................. 54

B.1 General ............................................................................................................................................................. 54

B.2 References ....................................................................................................................................................... 54

B.3 Product description data ........................................................................................................................... 54

B.4 Product technical data ................................................................................................................................ 54

B.5 System design data ....................................................................................................................................... 55

Annex C (informative) Calculation method for ground preheating and -cooling ................................. 56

Annex D (informative) Calculation method for rotary heat exchangers ................................................. 58

D.1 Calculation....................................................................................................................................................... 58

D.2 Data .................................................................................................................................................................... 58

Annex E (informative) Calculation examples ..................................................................................................... 59

E.1 Spreadsheet .................................................................................................................................................... 59

E.2 Example 1 (method 1) ................................................................................................................................. 59

E.3 Example 2 (method 2) ................................................................................................................................. 88

Bibliography .............................................................................................................................................................. 118

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European foreword

This document (CEN/TR 16798-6:2017) 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.

The necessary editorial revisions were made to comply with the requirements for each EPB technical

report.

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

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 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 16628:2014,

Energy Performance of Buildings - Basic Principles for the set of EPB standards [1];

b) a document with detailed technical rules to be followed in drafting EPB-standards;

CEN/TS 16629:2014, Energy Performance of Buildings - Detailed Technical Rules for the set of EPB-

standards [2]; and
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, and

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 52000-1:2017 [3].

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 contents 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 [2]):

— 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 [5] that laid the

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

This Technical Report accompanies the suite of EPB standards on the calculation of the energy

performance of ventilation systems. It relates to the European standards EN 16798-5-1 and

EN 16798-5-2, which form 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 standards in the set of EPB standards is defined in the

Introduction to the standards.
Accompanying spreadsheet(s)

Concerning the accompanied standards EN 16798-5-1 and EN 16798-5-2, the following spreadsheets

were produced:
— on EN 16798-5-1; and
— on EN 16798-5-2.

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

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1 Scope
This Technical Report refers to standards EN 16798-5-1 and EN 16798-5-2.

It contains information to support the correct understanding and use of these standards.

This Technical Report does not contain any normative provision.
2 Normative references
Not applicable.

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

is given in CEN ISO/TR 52000-2:2017.
3 Terms and definitions

For the purposes of this document, the terms and definitions as mentioned and given in the

EN 16798-5-1 and EN 16798-5-2 apply.

More information on some key EPB terms and definitions is given in CEN ISO/TR 52000-2:2017.

4 Symbols, subscripts and abbreviations
4.1 Symbols

For the purposes of this document, the symbols as mentioned and given in EN 16798-5-1 and

EN 16798-5-2 apply.
More information on key EPB symbols is given in CEN ISO/TR 52000-2:2017.

NOTE If new symbols are needed, indeed, please refer to the EPB standards template and Annex C of

EN ISO 52000-1:2017 for detailed rules.
Additional symbols are given in Table 1.
Table 1 — Symbols and units
Symbol Quantity Unit
u damper position —
γ concentration various
4.2 Subscripts

For the purposes of this document, the subscripts as mentioned and given in EN 16798-5-1 and

EN 16798-5-2 apply.
More information on key EPB subscripts is given in CEN ISO/TR 52000-2:2017.

NOTE If new subscripts are needed, indeed, please refer to the EPB standards template and Annex C of

EN ISO 52000-1:2017 for detailed rules.
Additional subscripts are given in Table 2.
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Table 2 — Subscripts
Subscript Term
Bal balanced
D damper
F fan
Fld full load
Gas going to the gas
R resistance
SP setpoint
4.3 Abbreviations

For the purposes of this document, the abbreviations as mentioned and given in EN 16798-5-1 and

EN 16798-5-2 apply.
More information on key EPB abbreviations is given in CEN ISO/TR 52000-2:2017.

NOTE If new abbreviations are needed, indeed, please refer to the EPB standards template and Annex C of

EN ISO 52000-1:2017 for detailed rules.
Additional abbreviations are given in Table 3.
Table 3 — Abbreviations
Abbreviation Term
C Central controller
CR Zone based controller
R Resistance
VOC Volatile oxide components
5 Brief description of the methods and routing
5.1 Output of the methods

The accompanied EPB standards, EN 16798-5-1 and EN 16798-5-2, cover two different methods for the

calculation of the energy performance of ventilation and/or air conditioning systems.

Because the scope and the applicability range of the two methods are different, it was decided to divide

the description in two separate documents.
5.2 General description of the methods
5.2.1 Method 1
The method covers the calculation of:

— the volume flow rates provided to the ventilation zones served by the system, based on the

required values;
— the supply air temperature and moisture content, based on the required values;
— the ventilation generation input (electric energy required by fans);
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— the humidification generation input;

— heating (including humidification in case of reheat with adiabatic humidification) and cooling input

to the air handling unit (to be transferred to the connected heating and cooling distribution systems

calculation);

— the recoverable heat or cold losses from ventilation/air conditioning system for heating or cooling;

— the ventilation auxiliary energy (electric energy for drives of, e.g. rotary or pumped circuit heat

recovery devices, control devices, actuators, etc.);

— the electric energy required for humidification (only for specific humidifier types); and

— the humidification auxiliary energy.
The time interval of the output can be:
a) hourly, or
b) bin,
according to the application of the standard and interval of the input.
5.2.2 Method 2
The method covers the calculation of:

— the volume flow rates provided to a single ventilation zone (no multi ventilation zones modelling)

served by the system, based on the req
...

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