CEN/TR 12831-4:2017

SLOVENSKI STANDARD
01-maj-2018
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Energy performance of buildings - Method for the calculation of the design heat load -
Part 4: Explanation and justification of EN 12831-3, Module M8-2, M8-3
Heizungsanlagen und wasserbasierte Kühlanlagen in Gebäuden - Methoden zur
Berechnung der Norm-Heizlast - Teil 4: Begleitender TR zur EN 12831-3 (Heizlast von
Trinkwarmwasseranlagen und Charakterisierung des Bedarfs)
Performance énergétique des bâtiments - Méthode de calcul de la charge thermique
nominale - Partie 4 : Explication et justification de l’EN 12831-3, Modules M8-2, M8-3
Ta slovenski standard je istoveten z: CEN/TR 12831-4:2017
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 12831-4
TECHNICAL REPORT
RAPPORT TECHNIQUE
April 2017
TECHNISCHER BERICHT
ICS 91.120.10; 91.140.10; 91.140.65
English Version
Energy performance of buildings - Method for calculation
of the design heat load - Part 4: Explanation and
justification of EN 12831-3, Module M8-2, M8-3
Performance énergétique des bâtiments - Méthode de Heizungsanlagen und wasserbasierte Kühlanlagen in
calcul de la charge thermique nominale - Partie 4 : Gebäuden - Methoden zur Berechnung der Norm-
Explication et justification de l'EN 12831-3, Modules Heizlast - Teil 4: Begleitender TR zur EN 12831-3
M8-2, M8-3 (Heizlast von Trinkwarmwasseranlagen und
Charakterisierung des Bedarfs)

This Technical Report was approved by CEN on 3 March 2017. It has been drawn up by the Technical Committee CEN/TC 228.

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 12831-4:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
4.1 Symbols . 6
4.2 Subscripts . 6
5 Information on the methods . 6
6 Method description . 7
6.1 Rationale, case of application . 7
6.2 Data input . 7
7 Worked out example . 7
7.1 Input data . 7
7.2 Calculation/result . 8
Annex A (informative) Calculation flowchart . 12
Bibliography . 13

European foreword
This document (CEN/TR 12831-4:2017) has been prepared by Technical Committee CEN/TC 228
“Heating systems and water based cooling systems in buildings”, the secretariat of which is held by DIN.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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.
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];
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-standards 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.
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
...