SIST EN 15316-1:2018

Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 1: General and Energy performance expression, Module M3-1, M3-4, M3-9, M8-1, M8-4

This standard is the general frame for the calculation of the energy performance of heating and domestic hot water systems. It specifies how to perform the calculation of the entire system using the calculation modules defined in the respective standards. It deals with common issues like operating conditions calculation and energy performance indicators.
This standard specifies the structure for the calculation of energy requirements of space heating and domestic hot water systems in buildings.
It standardises the required inputs and outputs in order to achieve a common European calculation method.
It allows the energy analysis of the different heating and Domestic hot water sub-systems including control (emission, distribution, storage, generation) by comparing the system losses and by defining system performance factors.
The performance analysis allows the comparison between sub-systems and make possible to monitor the impact of each sub-system on the energy performance of a building.
The calculation of the system losses of each part of the heating sub-systems is defined in subsequent standards
Ventilation systems are not included in this standard (e. g. balanced systems with heat recovery), but if the air is preheated or an air heating system is installed, the systems providing the heat to the AHU (Air Handling Unit) are covered by this standard.

Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen - Teil 1: Allgemeines und Darstellung der Energieeffizienz, Module M3-1, M3-4, M3-9, M8-1, M8-4

Diese Norm bildet den allgemeinen Rahmen für die Berechnung der Gesamtenergieeffizienz von Raum-heizungsanlagen und Trinkwarmwasseranlagen. Sie legt fest, wie die Berechnung für die gesamte Anlage mithilfe von Berechnungsmodulen durchzuführen ist, die in den einschlägigen Normen definiert sind. Sie behandelt allgemeine Themen, wie die Berechung der Betriebsbedingungen, sowie Indikatoren für die Gesamtenergieeffizienz.
Diese Norm legt die Struktur für die Berechnung der Energieanforderungen von Raumheizungsanlagen und Trinkwarmwasseranlagen in Gebäuden fest.
Sie vereinheitlicht die für die Berechnungen erforderlichen Eingabe- und Ausgabegrößen mit dem Ziel, ein einheitliches europäisches Berechnungsverfahren zu erstellen.
Sie ermöglicht die energetische Analyse der verschiedenen Teilsysteme der Heizungs- und Trinkwarm-wasseranlagen, einschließlich der Regelung (Wärmeübergabe,  verteilung,  speicherung,  erzeugung), durch Vergleichen der Systemenergieverluste und durch Festlegen von systembezogenen Leistungsfaktoren.
Die Analyse erlaubt es, die betreffenden Teilsysteme miteinander zu vergleichen und die Auswirkungen jedes einzelnen Teilsystems auf die Gesamtenergieeffizienz des Gebäudes zu überwachen.
Die Berechnungsverfahren der Systemenergieverluste jedes Teilsystems der Heizungsanlage sind in den folgenden Normen festgelegt.
Diese Norm umfasst keine Lüftungsanlagen (z. B. ausgeglichene Anlagen mit Wärmerückgewinnung); wird die Luft jedoch vorgewärmt oder ist ein Luftheizsystem eingebaut, so werden die Systeme, die die Wärme für das Luftbehandlungsgerät (AHU, en: Air Handling Unit) liefern, von der vorliegenden Norm abgedeckt.

Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques et des rendements des systèmes - Partie 1 : Généralités et expression de la performance, Modules M3-1, M3-4, M3-9, M8-1, M8-4

La présente norme est le cadre général pour le calcul de la performance énergétique des systèmes de chauffage et de production d’eau chaude sanitaire. Elle spécifie comment réaliser le calcul de l’ensemble du système en utilisant les modules de calcul définis dans les normes respectives. Elle traite des problèmes communs tels que le calcul des conditions de fonctionnement et les indicateurs de performance énergétique.
La présente norme spécifie la structure de calcul des besoins énergétiques des systèmes de chauffage des locaux et de production d’eau chaude sanitaire dans les bâtiments.
Elle normalise les données d’entrée et de sortie nécessaires, afin d’obtenir une méthode de calcul commune au niveau européen.
Elle permet l’analyse énergétique des différents sous-systèmes de chauffage et de production d’eau chaude sanitaire, y compris leur régulation (émission, distribution, stockage, génération) en comparant les pertes du système et en définissant les facteurs de performance du système.
Cette analyse de performance permet de comparer les sous-systèmes et d’observer l’impact de chacun d’eux sur la performance énergétique d’un bâtiment.
Le calcul des pertes de chaque partie des sous-systèmes de chauffage est défini dans les normes suivantes.
Les systèmes de ventilation ne sont pas compris dans la présente norme (par exemple les systèmes double flux avec récupération de chaleur), mais si l’air est préchauffé ou si un système de chauffage de l’air est installé, les systèmes fournissant la chaleur à l’unité de traitement d’air sont couverts par la présente norme.

Energijske lastnosti stavb - Metoda za izračun energijskih zahtev in učinkovitosti sistema - 1. del: Splošno in opredelitev energijske učinkovitosti - Moduli M3-1, M3-4, M3-9, M8-1 in M8-4

Ta standard je splošni okvir za izračun energetske učinkovitosti sistemov ogrevanja in gospodinjske tople vode. Določa, kako izvesti izračun celotnega sistema s pomočjo modulov izračuna, določenih v posameznih standardih. Obravnava splošne težave, kot je izračun obratovalnih pogojev in kazalniki energetske učinkovitosti.
Ta standard določa strukturo za izračun energijskih zahtev sistemov ogrevanja prostora in gospodinjske tople vode v stavbah.
Standardizira zahtevane vhode in izhode za dosego splošne evropske računske metode.
Omogoča energijsko analizo različnih podsistemov ogrevanja in gospodinjske tople vode, vključno z nadzorom (emisija, razporeditev, shranjevanje, proizvodnja) s primerjanjem sistemskih izgub in določanjem dejavnikov učinkovitosti sistema.
Analiza učinkovitosti omogoča primerjavo med podsistemi ter spremljanje vpliva vsakega od teh podsistemov na energijsko učinkovitost stavbe.
Izračun sistemskih izgub vsakega dela podsistemov ogrevanja je določen v naslednjih standardih.
Prezračevalni sistemi niso vključeni v ta standard (npr. uravnoteženi sistemi z rekuperacijo toplote), vendar če je zrak predogret ali je nameščen sistem ogrevanja zraka, ta standard zajema sisteme, ki dovajajo toploto v prezračevalno enoto (AHU).

General Information

• Status: Published
• Public Enquiry End Date: 08-Feb-2015
• Publication Date: 17-Apr-2018
• ICS: 91.120.10 - Thermal insulation of buildings
• ICS: 91.140.10 - Central heating systems
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-Dec-2017
• Due Date: 16-Feb-2018
• Completion Date: 18-Apr-2018
• Directive: 2010/31/EU - Directive 2010/31/eu of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast)
• Directive: TRRTP126 - Tehnična smernica TSG-01-004:2010 - Učinkovita raba energije v stavbah
• Mandate: M/480 - Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and promoting the energy efficiency of buildings, in accordance with the terms set in the recast of the Directive on the energy performance buildings (2010/31/EU)
• Ref Project: EN 15316-1:2017 - Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 1: General and Energy performance expression, Module M3-1, M3-4, M3-9, M8-1, M8-4

Relations

• Replaces: SIST EN 15316-1:2007 - Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 1: General
• Effective Date: 01-May-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 15316-1:2018
01-maj-2018
1DGRPHãþD
SIST EN 15316-1:2007
(QHUJLMVNHODVWQRVWLVWDYE0HWRGD]DL]UDþXQHQHUJLMVNLK]DKWHYLQXþLQNRYLWRVWL
VLVWHPDGHO6SORãQRLQRSUHGHOLWHYHQHUJLMVNHXþLQNRYLWRVWL0RGXOL00
00LQ0
Energy performance of buildings - Method for calculation of system energy requirements
and system efficiencies - Part 1: General and Energy performance expression, Module
M3-1, M3-4, M3-9, M8-1, M8-4
Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der
Energieanforderungen und Nutzungsgrade der Anlagen - Teil 1: Allgemeines und
Darstellung der Energieeffizienz, Module M3-1, M3-4, M3-9, M8-1, M8-4
Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques
et des rendements des systèmes - Partie 1 : Généralités et expression de la
performance, Modules M3-1, M3-4, M3-9, M8-1, M8-4
Ta slovenski standard je istoveten z: EN 15316-1:2017
ICS:
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
SIST EN 15316-1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 15316-1:2018

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SIST EN 15316-1:2018


EN 15316-1
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2017
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 15316-1:2007
English Version

Energy performance of buildings - Method for calculation
of system energy requirements and system efficiencies -
Part 1: General and Energy performance expression,
Module M3-1, M3-4, M3-9, M8-1, M8-4
Performance énergétique des bâtiments - Méthode de Energetische Bewertung von Gebäuden - Verfahren zur
calcul des besoins énergétiques et des rendements des Berechnung der Energieanforderungen und
systèmes - Partie 1 : Généralités et expression de la Nutzungsgrade der Anlagen - Teil 1: Allgemeines und
performance, Modules M3-1, M3-4, M3-9, M8-1, M8-4 Darstellung der Energieeffizienz, Module M3-1, M3-4,
M3-9, M8-1, M8-4
This European Standard was approved by CEN on 27 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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. EN 15316-1:2017 E
worldwide for CEN national Members.

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
Contents Page

European foreword . 6
Introduction . 7
1 Scope . 11
2 Normative references . 13
3 Terms and definitions . 13
4 Symbols and abbreviations . 13
4.1 Symbols. 13
4.2 Subscripts . 13
5 Description of the methods . 14
5.1 General description of the calculation method . 14
5.1.1 Calculation direction . 14
5.1.2 Operating conditions . 14
5.1.3 Maximum heat supply and power check . 15
5.1.4 Two emission sub-systems installed in the same heating system zone . 16
5.1.5 Multiservice and operating of multi generator systems (load dispatching) . 16
5.1.6 Heating and domestic hot water system thermal losses . 16
5.1.7 Auxiliary energy . 17
5.1.8 Sub-system energy balance . 18
5.1.9 Interaction with other technical building systems . 20
5.2 Optional methods. 20
5.3 Application data . 20
6 Calculation procedure . 20
6.1 Output data. 20
6.2 Calculation interval and calculation period . 22
6.2.1 Calculation interval . 22
6.2.2 Calculation period . 22
6.3 Input data . 22
6.3.1 Product data. 22
6.3.2 System design data . 22
6.3.3 Operating data and boundary conditions . 23
6.3.4 Other data . 25
6.4 Domestic hot water energy use calculation . 25
6.4.1 Domestic hot water needs per domestic hot water system zone . 25
6.4.2 Domestic hot water distribution calculation . 26
6.4.3 Domestic hot water storage calculation . 27
6.5 Space heating energy use calculation . 28
6.5.1 Generalities . 28
6.5.2 Space heating emission useful output per space heating system zone . 28
6.5.3 Heating system control . 30
6.6 Nodes calculation . 31
6.6.1 General . 31
6.6.2 Node output energy flow (load circuits) . 32
2

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
6.6.3 Node supply (flow) temperature . 32
6.6.4 Node return temperature . 32
6.6.5 Node losses . 33
6.6.6 Node gains . 33
6.6.7 Node input (feeding circuit). 33
6.6.8 Node input mass flow rate . 33
6.7 Generation sub-system calculation . 33
6.7.1 Heat generator dispatch sequence . 33
6.7.2 Generation sub-system operating conditions calculation . 35
6.7.3 Generation input calculation . 35
6.8 Generation input per energy carrier and per service . 35
6.8.1 General . 35
6.8.2 Alternate control . 36
6.8.3 Parallel control . 36
6.9 Auxiliary energy . 36
6.9.1 Calculating the auxiliary energy of all sub systems . 36
6.9.2 Distribution rules auxiliary energy . 36
6.10 Recoverable system thermal losses . 37
6.10.1 Calculating the recoverable thermal losses of all sub systems . 37
6.10.2 Distribution rules recoverable losses . 37
7 Energy efficiency indicators of space heating and domestic hot water systems or
sub-systems . 38
Annex A (normative) Template for the specification of application data . 39
Annex B (informative) Default application data . 44
Annex C (normative) Heating circuit calculation modules . 50
C.1 General . 50

C.2 Constant flow rate and variable temperature module . 51
C.2.1 General . 51
C.2.2 Output data . 52
C.2.3 Input data . 52
C.2.4 Calculation of minimum required temperature . 53
C.2.5 Calculation of actual operating conditions . 54
C.3 Varying mass flow rate and constant temperature module . 54
C.3.1 General . 54
C.3.2 Output data . 55
C.3.3 Input data . 56
C.3.4 Calculation of minimum required temperature . 56
C.3.5 Calculation of actual operating conditions . 57
C.4 Intermittent flow rate module . 58
C.4.1 General . 58
C.4.2 Output data . 59
C.4.3 Input data . 60
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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
C.4.4 Calculation of minimum required temperature . 60
C.4.5 Calculation of actual operating conditions . 61
C.5 Constant flow rate and variable heat exchange . 62
C.5.1 General . 62
C.5.2 Output data. 63
C.5.3 Input data . 64
C.5.4 Calculation of minimum required temperature . 64
C.5.5 Calculation of actual operating conditions . 65
Annex D (normative) Generation circuits calculation modules . 67
D.1 Generation direct circuit . 67
D.1.1 General . 67
D.1.2 Output data. 67
D.1.3 Input data . 68
D.1.4 Calculation procedure . 68
D.2 Generation independent flow rate circuit . 69
D.2.1 General . 69
D.2.2 Output data. 69
D.2.3 Input data . 70
D.2.4 Calculation procedure . 70
Annex E (informative) Bin method . 72
E.1 General . 72
E.1.1 General . 72
E.1.2 Uniformly occurring heat gains . 73
E.1.3 Non-uniformly occurring heat gains . 73
E.2 Bin principles . 74
E.3 Energy demand – heating loads . 75
E.3.1 General . 75
E.3.2 Space heating mode . 76
E.3.3 Domestic hot water mode . 76
E.4 Calculation interval . 77
E.4.1 Bin calculation interval. 77
E.4.2 Effective bin time . 77
E.5 Generator operating mode (priorities) . 79
E.5.1 General . 79
E.5.2 Alternate operating mode . 80
E.5.3 Parallel operating mode . 80
4

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
E.6 Operating conditions calculation . 80
E.6.1 Running time of a heat generator . 80
E.6.2 Generator running time depending on operating mode . 81
E.6.3 Generator sequence due to lack of heat capacity . 82
E.6.4 Calculation of needed back-up energy . 83


5

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
European foreword
This document (EN 15316-1:2017) has been prepared by Technical Committee CEN/TC 228 “Heating
systems and water based cooling systems”, the secretariat of which is held by DIN.
This document supersedes EN 15316-1:2007.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2017, and conflicting national standards
shall be withdrawn at the latest by October 2017.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association.
The main changes compared to EN 15316-1:2007 are:
— reference and coordination of all other modules (a module corresponds to a subsystem standard);
— inclusion of operating conditions calculation and load dispatching related to building automation
control (BAC) and systems design (e.g. connection of distributions).
— inclusion of a monthly method based on BIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United Kingdom.
6

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
Introduction
This Standard is part of a series of standards aiming at international harmonization of the
methodology for the assessment of the energy performance of buildings, called “set of EPB standards”.
EPB standards deal with energy performance calculation and other related aspects (like system sizing)
to provide the building services considered in the EPB Directive.
All EPB standards follow specific rules to ensure overall consistency, unambiguity and transparency.
All EPB standards provide a certain flexibility with regard to the methods, the required input data and
references to other EPB standards, by the introduction of a normative template in Annex A and
Annex B with informative default choices.
For the correct use of this standard a normative template is given in Annex A to specify these choices.
Informative default choices are provided in Annex B.
Use by or for regulators: In case the standard is used in the context of national or regional legal
requirements, mandatory choices may be given at national or regional level for such specific
applications. These choices (either the informative default choices from Annex B or choices adapted to
national / regional needs, but in any case following the template of this Annex A) can be made
available as national annex or as separate (e.g. legal) document (national data sheet).
NOTE So in this case:
— the regulators will specify the choices;
— the individual user will apply the standard to assess the energy performance of a building, and
thereby use the choices made by the regulators.
Topics addressed in this standard can be subject to public regulation. Public regulation on the same
topics can override the default values in Annex B of this standard. Public regulation on the same topics
can even, for certain applications, override the use of this standard. Legal requirements and choices
are in general not published in standards but in legal documents. In order to avoid double publications
and difficult updating of double documents, a national annex may refer to the legal texts where
national choices have been made by public authorities. Different national annexes or national data
sheets are possible, for different applications.
It is expected, if the default values, choices and references to other EPB standards in Annex B are not
followed due to national regulations, policy or traditions, that:
— national or regional authorities prepare data sheets containing the choices and national or
regional values, according to the model in Annex A. In this case the national annex (e.g. NA) refers
to this text;
— or, by default, the national standards body will consider the possibility to add or include a national
annex in agreement with the template of Annex A, in accordance to the legal documents that give
national or regional values and choices.
Further target groups are parties wanting to motivate their assumptions by classifying the building
energy performance for a dedicated building stock.
More information is provided in the Technical Report accompanying this standard
(CEN/TR 15316-6-1).
CEN/TC 228 deals with heating systems and water based cooling systems in buildings. Subjects
covered by TC 228 are:
7

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SIST EN 15316-1:2018
EN 15316-1:2017 (E)
— energy performance calculation;
— inspection;
— design of systems;
— installation and commissioning.
The first version of this standard was developed during the first EPBD mandate and published in 2008.
The revision for inclusion in the second EPBD mandate package was performed in 2014.
Default references to EPB standards other than EN ISO 52000-1 are identified by the EPB module code
number and given an Annex A (normative template) and Annex B (informative default choice).
Table 1 associates the title of the EN EPB standards to the numbers and modules. It also remembers
the replaced standards.
Table 1 — List of EN EPB standards related to the calculation of space heating and domestic hot
water systems
Old
New EPBD
No. Module standards Title of the new EPBD standard
numbering
replaced
Energy performance of buildings - Heating systems and water based
EN 15459–1 EN 15459 cooling systems in buildings - Part 1: Economic evaluation
procedure for energy systems in buildings, Module M1-14
1 M1–14
Energy performance of buildings - Economic evaluation procedure
CEN/TR 1545
New for energy systems in buildings - Part 2: Explanation and
9–2
justification of EN 15459-1, Module M1-14)
Ene
...

SLOVENSKI STANDARD
oSIST prEN 15316-1:2015
01-januar-2015
2JUHYDOQLVLVWHPLLQVLVWHPL]DKODMHQMH]YRGRYVWDYEDK0HWRGD]DL]UDþXQ
HQHUJHWVNLK]DKWHYLQXþLQNRYLWRVWLVLVWHPDGHO6SORãQRLQL]UDåDQMH
HQHUJHWVNHXþLQNRYLWRVWL
Heating systems and water based cooling systems in buildings - Method for calculation
of system energy requirements and system efficiencies - Part 1: General and Energy
performance expression
Heizungsanlagen und wasserbasierte Kühlanlagen in Gebäuden - Verfahren zur
Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen - Teil 1:
Allgemeines und Darstellung der Energieeffizienz
Systèmes de chauffage et systèmes de refroidissement à eau dans les bâtiments -
Méthode de calcul des besoins énergétiques et des rendements des systèmes - Partie 1:
Généralités
Ta slovenski standard je istoveten z: prEN 15316-1
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
oSIST prEN 15316-1:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15316-1:2015

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oSIST prEN 15316-1:2015

EUROPEAN STANDARD
DRAFT
prEN 15316-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

October 2014
ICS 91.140.10 Will supersede EN 15316-1:2007
English Version
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and
system efficiencies - Part 1: General and Energy performance
expression
Systèmes de chauffage et systèmes de refroidissement à Heizungsanlagen und wasserbasierte Kühlanlagen in
eau dans les bâtiments - Méthode de calcul des besoins Gebäuden - Verfahren zur Berechnung der
énergétiques et des rendements des systèmes - Partie 1: Energieanforderungen und Nutzungsgrade der Anlagen -
Généralités Teil 1: Allgemeines
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 228.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15316-1:2014 E
worldwide for CEN national Members.

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oSIST prEN 15316-1:2015
prEN 15316-1:2014 (E)
Contents
Page
Foreword .4
Introduction .5
1 Scope .9
2 Normative references .9
3 Terms and definitions . 10
4 Symbols and abbreviations . 10
4.1 Symbols . 10
4.2 Subscripts . 10
5 Description of the methods . 10
5.1 Output of the method . 10
5.2 General description of the method . 11
5.3 Zoning criteria heating system . 14
5.4 Boundaries between sub-system- Allocating pumps and related auxiliary energy to
generation or distribution sub-systems . 14
5.5 Sub-system calculation . 15
5.6 Specification on interaction between BACS / space heating, cooling and DHW systems . 18
5.7 Interaction with heating and cooling needs calculation . 18
5.7.1 Heating needs . 18
5.7.2 Losses . 19
5.7.3 Maximum heat supply . 19
6 Calculation procedure . 19
6.1 Output data . 19
6.2 Calculation time steps . 20
6.3 Input data . 20
6.3.1 Control . 20
6.3.2 Operation or boundary conditions . 21
6.4 Energy use calculation – Space heating and DHW . 22
6.4.1 Generation input per energy carrier . 22
6.4.2 Heat losses . 22
6.4.3 Auxiliary energy . 23
6.4.4 Thermal needs of circuits . 24
6.5 Operating conditions calculation . 25
6.5.1 General sketch of simple and complex technical systems . 25
6.5.2 Technical system structuring . 25
6.5.3 Space heating emission sub-system operating conditions . 26
6.5.4 Space heating distribution sub-system operating conditions calculation . 27
6.5.5 Generation sub-system operating conditions calculation . 29
6.5.6 Node specifications on domestic hot water systems . 31
7 Energy performance indicators of space heating and domestic hot water systems or sub-
systems . 31
Annex A (informative) Example of heating circuit module. 33
A.1 Constant flow, varying temperature . 33
A.1.1 General . 33
A.1.2 Input data . 33
A.1.3 Constants . 34
A.1.4 Calculation procedure . 34
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Annex B (informative) Example of generation circuit . 36
B.1 Generation direct circuit . 36
B.1.1 General . 36
B.1.2 Input data. 36
B.1.3 Calculation procedure . 37


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Foreword
This document (prEN 15316-1:2014) has been prepared by Technical Committee CEN/TC 228 “Heating
systems and water based cooling systems”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15316-1:2007.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
The main changes compared to EN 15316-1:2007 are:
a) reference and coordination of all other modules;
b) inclusion of general topics such as operating conditions calculation and load dispatching.
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Introduction
1)
This standard is part of a package developed to support EPBD directive implementation, hereafter called
"EPB standards".
EPB standards deal with energy performance calculation and other related aspects (like system sizing) to
provide the building services considered in the EPBD directive.
CEN/TC 228 deals with heating systems and water based cooling systems in buildings. Subjects covered by
TC 228 are:
 energy performance calculation;
 inspection;
 design of systems;
 installation and commissioning.
This standard was developed during the first EPBD mandate and the first version was published in 2008.
The revision for inclusion in the second mandate package was performed in 2014.
Figure 1 shows the relative position of this standard within the EPB package of standards and the position of
all the other EPB standards under the responsibility of CEN/TC 228.

1) Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of
buildings (recast)
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Building
Overarching Technical Building Systems
(as such)


sub sub
M1 sub1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
1 1
1 1 1 15316-1     15316-1
General General General
Common terms
and definitions; Building Energy
2 2 2 Needs      12831-3
Needs
symbols, units
and subscripts
(Free) Indoor
Conditions Maximum Load
3 Applications 3 3 12831-1     12831-3
without and Power
Systems
Ways to
Ways to Ways to
Express
4 Express Energy 4 Express Energy 4 15316-1     15316-1
Energy
Performance Performance
Performance
Building
Heat Transfer
Functions and Emission &
5 5 by 5 15316-2 15316-2
Building control
Transmission
Boundaries
Building
Heat Transfer
Occupancy and Distribution &
6 6 by Infiltration 6 15316-3 15316-3    15316-3
Operating control
and Ventilation
Conditions
Aggregation of
Energy Internal Storage & 15316-5
7 7 7 15316-5
Services and Heat Gains control 15316-4-3
Energy Carriers
Building Solar
8 8 8 Generation
Partitioning Heat Gains
Combustion 15316-4-
   8-1   15316-4-1
boilers 1
15316-4- 15316-4-
   8-2 Heat pumps  15316-4-2
2 2
Thermal solar 15316-4-
   8-3   15316-4-3  15316-4-3
Photovoltaics 3
On-site 15316-4-
   8-4   15316-4-4  15316-4-4
cogeneration 4
District heating 15316-4- 15316-4-
   8-5  15316-4-5  15316-4-5
and cooling 5 5
Direct electrical 15316-4-
   8-6   15316-4-6
heater 6
   8-7 Wind turbines     15316-4-7
Radiant 15316-4-
   8-8
heating, stoves 8
Load
Calculated Building
dispatching and
9 Energy 9 Dynamics 9
operating
Performance (thermal mass)
conditions

Measured Measured Measured
10 Energy 10 Energy 10 Energy 15378-3     15378-3
Performance Performance Performance

11 Inspection 11 Inspection 11 Inspection 15378-1     15378-1
Ways to
12 Express Indoor 12 -- 12 BMS
Comfort
External
13 Environment

Conditions
Economic 15459-
14
Calculation 1
Figure 1 — Position of EN 15316-1 within the EPB set of standards
6
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot water
Lighting
Building automation &
control
Electricity production

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Table 1 associates the title of the EN EPB standards to the numbers and modules. It also remembers the
replaced standards.
Table 1 — List of EN EPB standards related the calculation of space heating and domestic hot water
systems
New EPBD Old standards
No. Module Title of the new EPBD standard
numbering replaced
Heating systems and water based cooling systems in buildings -
EN 15459-1 EN 15459 Energy performance of buildings - Part 1: Economic evaluation
1 M1-14 procedure for energy systems in buildings
Accompanying TR to EN 15459-1 (Economic evaluation procedure for
TR 15459-2 New
energy systems in buildings)
Heating systems and water based cooling systems in buildings -
EN 15378-1 EN 15378 Heating systems and DHW in buildings - Part 1: Inspection of boilers,
M3-11
2 heating systems and DHW
M8-11
Accompanying TR to EN 15378-1 (Inspection of boilers, heating
TR 15378-2 New
systems and DHW)
Heating systems and water based cooling systems in buildings -
M3-10 EN 15378-3 New Heating systems and DHW in buildings - Part 3: Measured energy
3
M8-10 performance
TR 15378-4 New Accompanying TR to EN 15378-3 (Measured energy performance)
Heating systems and water based cooling systems in buildings -
EN 12831-1 EN 12831 Method for calculation of the design heat load - Part 1: Space heating
4 M3-3
load
TR 12831-2 New Accompanying TR for EN 12831-1 (Space heating load)
Heating systems and water based cooling systems in buildings -
EN 12831-3 EN 15316-3-1 Method for calculation of the design heat load - Part 3: Domestic hot
5 M8-3 water systems heat load and characterisation of needs
Accompanying TR to EN 12831-3 (Domestic hot water systems heat
TR 12831-4 New
load and characterisation of needs)
Heating systems and water based cooling systems in buildings -
M3-1
EN 15316-1 EN 15316-1 Method for calculation of system energy requirements and system
M8-1
6 efficiencies - Part 1: General and Energy performance expression
M3-4
TR 15316-6-1 New Accompanying TR to EN 15316-1 (General and Energy performance
M8-4
expression)
Heating systems and water based cooling systems in buildings -
EN 15316-2 EN 15316-2-1 Method for calculation of system energy requirements and system
M3-5
7 efficiencies - Part 2: Space emission systems (heating and cooling)
M4-5
Accompanying TR to EN 15316-2 (Space emission systems (heating
TR 15316-6-2 New
and cooling))
EN 15316-3 Heating systems and water based cooling systems in buildings -
EN 15316-2-3 Method for calculation of system energy requirements and system
M3-6
EN 15316-3-2 efficiencies - Part 3: Space distribution systems (DHW, heating and
8 M4-6
cooling)
M8-6
TR 15316-6-3 New Accompanying TR to EN 15316-3 (Space distribution systems (DHW,
heating and cooling))
EN 15316-4-1 Heating systems and water based cooling systems in buildings -
EN 15316-4-1
Method for calculation of system energy requirements and system
EN 15316-3-3
M3-8-1 efficiencies - Part 4-1: Space heating and DHW generation systems,
9 EN 15316-4-7
M8-8-1 combustion systems (boilers, biomass)
Accompanying TR to EN 15316-4-1 (Space heating and DHW
TR 15316-6-4 New
generation systems, combustion systems (boilers, biomass))
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and system
M3-8-2 EN 15316-4-2 EN 15316-4-2
efficiencies - Part 4-2: Space heating generation systems, heat pump
10 M4-8-2
systems
M8-8-2
Accompanying TR to EN 15316-4-2 (Space heating generation
TR 15316-6-5 New
systems, heat pump systems)
EN 15316-4-3 Heating systems and water based cooling systems in buildings -
EN 15316-4-3 Method for calculation of system energy requirements and system
M3-8-3
EN 15316-4-6 efficiencies - Part 4-3: Heat generation systems, thermal solar and
11 M8-8-3
photovoltaic systems
M11-8-3
Accompanying TR to EN 15316-4-3 (Heat generation systems,
TR 15316-6-6 New
thermal solar and photovoltaic systems)
Heating systems and water based cooling systems in buildings -
M3-8-4
Method for calculation of system energy requirements and system
M8-8-4 EN 15316-4-4 EN 15316-4-4
efficiencies - Part 4-4: Heat generation systems, building-integrated
12 M11-8-4
cogeneration systems
M3-7 /
TR 15316-6-7 New Accompanying TR to EN 15316-4-4 (Heat generation systems,
M8-7
building-integrated cogeneration systems)
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M3-8-5 Heating systems and water based cooling systems in buildings -
M4-8-5 EN 15316-4-5 EN 15316-4-5 Method for calculation of system energy requirements and system
13
efficiencies - Part 4-5: District heating and cooling
M8-8-5
M11-8-5 TR 15316-6-8 New Accompanying TR to EN 15316-4-5 (District heating and cooling)
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and system
EN 15316-4-8 EN 15316-4-8
efficiencies - Part 4-8: Space heating generation systems, air heating
14 M3-8-8 and overhead radiant heating systems, including stoves (local)
Accompanying TR to EN 15316-4-8 (Space heating generation
TR 15316-6-9 New systems, air heating and overhead radiant heating systems, including
stoves (local))
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and system
EN 15316-5 New
M3-7 efficiencies - Part 5: Space heating and DHW storage systems (not
15
M8-7 cooling)
Accompanying TR to EN 15316-5 (Space heating and DHW storage
TR 15316-6-10 New
systems (not cooling))
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and system
M3-8-6
16 EN 15316-4-9 New efficiencies - Part 4-9: Direct electric generation systems
M8-8-6

(not covered by EPBD mandate M/480)
Heating systems and water based cooling systems in buildings -
Method for calculation of system energy requirements and system
17 M11-8-7 EN 15316-4-10 New efficiencies - Part 4-10: Wind power generation systems

(not covered by EPBD mandate M/480)

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1 Scope
This standard is the general frame for the calculation of the energy performance of heating and domestic hot
water systems. It specifies how to perform the calculation of the entire system using the calculation modules
defined in the respective standards. It deals with common issues like operating conditions calculation and
energy performance indicators.
This standard specifies the structure for the calculation of energy requirements of space heating and domestic
hot water systems in buildings.
It standardises the required inputs and outputs in order to achieve a common European calculation method.
It allows the energy analysis of the different heating and Domestic hot water sub-systems including control
(emission, distribution, storage, generation) by comparing the system losses and by defining system
performance factors.
The performance analysis allows the comparison between sub-systems and make possible to monitor the
impact of each sub-system on the energy performance of a building.
The calculation of the system losses of each part of the heating sub-systems is defined in subsequent
standards
Ventilation systems are not included in this standard (e. g. balanced systems with heat recovery), but if the air
is preheated or an air heating system is installed, the systems providing the heat to the AHU (Air Handling
Unit) are covered by 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.
prCEN/TS 16629, Energy Performance of Buildings — Detailed technical rules for the set of EPBD standards
prEN ISO 13790, Energy performance of buildings — Calculation of energy use for space heating and cooling
prEN 15603:2013, Energy performance of buildings — Overall energy use and definition of energy ratings
prEN 15316-2, Heating systems and water based cooling systems in buildings — Method for calculation of
system energy requirements and system efficiencies — Part 3: Space distribution systems (DHW, heating and
cooling)
prEN 15316-3, Heating systems and water based cooling systems in buildings — Method for calculation of
system energy requirements and system efficiencies — Part 3: Space distribution systems (DHW, heating and
cooling)
prEN 15316-4-x, Heating systems in buildings — Generation systems
EN 15316-5, Heating systems and water based cooling systems in buildings — Method for calculation of
system energy requirements and system efficiencies — Part 5: Space heating and DHW storage systems (not
cooling)
prEN 15232:2014, Energy performance of buildings — Impact of Building Automation, Controls and Building
Management

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3 Terms and definitions
For the purposes of this document, the terms and definitions given in in EN ISO 7345:1995 and
prEN 15603:2013, and the following specific definitions apply. and the following apply.
3.1
feeding circuit (sources)
all circuits providing the node with energy
3.2
load circuit
all circuits that draw energy from the node and distribute it to the demand side (e.g. emitters)
3.3
node
connection point between one or several sources (feeding circuits) and one or more load circuits (e.g.
distribution circuits). The total load is dispatched among the sources (e.g. generators) at the node.
4 Symbols and abbreviations
4.1 Symbols
For the purposes of this European Standard, the symbols given in prEN 15603:2013 and the specific symbols
listed in Table 2 apply.
Table 2 — Symbols and units
Symbol Name of quantity Unit
GEN_FUEL Fuel type -
HEAT_XXXX_XXXX_XXX BAC function identifier -
V' mass flow rate kg/h
X

4.2 Subscripts
For the purposes of this European Standard, the subscripts given in prEN 15603:2013 and the specific
subscripts listed in Table 3 apply.
Table 3 — Subscripts
nod node
flw Flow (supply)
ret return
5 Description of the methods
5.1 Output of the method
This method covers the calculation of delivered energy, auxiliary energy, recoverable losses and specific
performance indicators of heating and/or domestic hot water systems.
The time step of the output can be:
 Yearly
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 Monthly
 Hourly
 bin
According to the time-step of the input.
5.2 General description of the method
The general order of calculations is provided in prEN 15603:2013, 8.2 “Overall calculation procedure”.
The calculation direction is from the energy needs to the source (e. g. from the building energy needs to the
primary energy). The calculation direction is the opposite of the energy flow in the system.
The heating and domestic hot water systems are modelled by subsystems. The basic energy balance scheme
for each sub-system is given in 5.5.
The calculation is based on the following sub-systems of the space heating and domestic hot water system:
 the emission sub-system;
 the distribution sub-system;
 the storage sub-system (can be included in the generation sub-system if tested as a whole or
detailed as the storage sub-system)
 the generation sub-system. (e. g. boilers, solar collectors, heat pumps, cogeneration units).
NOTE This structure is similar to the physical structure of heating systems.
Some of the sub-systems may be missing (e. g. heating systems may include no storage)
Each sub-system calculation method includes the effect of relevant controls
The calculation structure shall follow the actual structure of the systems being calculated. Interconnections
between multiple sub-systems is handled with nodes.
Thermal energy and auxiliary energy used by the heating and DHW system are calculated separately.
The basic modular structure of a heating system is shown in Figure 2.

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Key:
S1, S2,… Elementary spaces
H1, H2, H3 Heating zones
Figure 2 — Heating system basic structure (prEN 15603:2013, 10.3)
The basic modular structure of a heating system and consists of the following elements:
 one or several heating circuits, characterised by emission and control and distribution losses;
 one or several nodes connecting circuits and generators;
 other distribution subsystems connecting nodes and characterised by distribution losses;
 one or several generators, characterised by a required energy input;
 storage subsystems connected to nodes or to generators, characterised by storage losses.
The basic modular structure of a domestic hot water system is shown in Figure 3.
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Key:
S1, S2, S3, S4 Elementary spaces
W1, W2, W3, W4 Domestic Hot Water zones
Figure 3 — Domestic hot water system structuring (prEN 15603:2013, 10.4)
and consists of the following elements:
 one or several final distribution circuits, characterised by distribution losses;
 one or several recirculation networks, characterised by distribution losses;
 one or several nodes connecting circuits and generators;
 one or several generators;
 storage subsystems connected to nodes or to generators.
The generator of the domestic hot water system may be replaced by a connection to the space heating
system.
Operating conditions are calculated for each subsystem.
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