EN 12831-3:2017
(Main)Energy performance of buildings - Method for calculation of the design heat load - Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3
Energy performance of buildings - Method for calculation of the design heat load - Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3
This European Standard describes a method to calculate the power and the storage volume required for the dimensioning of domestic hot water systems (DHW). The applicability ranges from direct water heaters (no storage volume and a comparatively large effective heating power) to larger storage systems with a comparatively small heating power and large storage volumes.
This European Standard is applicable to the following water storage systems:
- storage systems characterized by a minimal mixing zone, (such as stratified charging storage tanks or storage tanks with external heat exchangers): these systems are nominated in this standard as "charging storage systems";
- storage tank water heaters and warm water storage tanks with a pronounced mixing zone (such as DHW storage tanks with internal heat exchangers), nominated in this standard as "mixed storage systems";
and for different uses.
The Scope also includes standardization methods for determining the energy need for domestic hot water. This European Standard covers the domestic hot water needs in buildings.
The calculation of the energy needs for DHW-Systems applies to residential and non-residential buildings, a building or a zone of a building.
Figure 1 shows the relative position of this standard within the set of EPB standards in the context of the modular structure as set out in EN ISO 52000-1.
NOTE 1 In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the relevant EPB standards and accompanying technical reports that are published or in preparation.
NOTE 2 The modules represent EPB standards, although one EPB standard may cover more than one module and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method respectively. See also Clause 2 and Tables A.1 and B.1.
Table 1 shows the relative position of this standard within the EPB package of standards.
(...)
Energetische Bewertung von Gebäuden — Verfahren zur Berechnung der Norm-Heizlast — Teil 3: Trinkwassererwärmungsanlagen, Heizlast und Bedarfsbestimmung, Module M8-2, M8-3
Diese Europäische Norm beschreibt ein Verfahren zur Berechnung der Leistung und des Speichervolumens, die zur Bemessung von Anlagen zur Trinkwassererwärmung erforderlich sind. Die Anwendbarkeit erstreckt sich von direkten Trinkwassererwärmern (kein Speichervolumen und eine vergleichsweise große effektive Wärmeleistung) bis hin zu größeren Speicheranlagen mit einer vergleichsweise geringen Wärmeleistung und großen Speichervolumina).
Diese Europäische Norm gilt für die folgenden Speicheranlagen für Trinkwasser:
Speichersysteme, die durch einen minimalen Mischbereich gekennzeichnet sind (wie Schichtlade-Trinkwasserspeicher oder Trinkwasserspeicher mit externen Wärmeüberträgern). Diese Systeme werden in dieser Norm als „Speicherladesysteme“ bezeichnet;
Speicher-Wassererwärmer und Warmwasserspeicher mit einem ausgeprägten Mischbereich (wie Trinkwarmwasser-Speicher mit internen Wärmeüberträgern) werden in dieser Norm als „gemischte Speichersysteme“ bezeichnet;
und für andere Zwecke.
Der Anwendungsbereich umfasst auch Standardisierungsverfahren zur Bestimmung des Energiebedarfs für die Trinkwassererwärmung. Diese Norm behandelt den Bedarf an erwärmtem Trinkwasser in Gebäuden.
Die Berechnung des Energiebedarfs für Anlagen zur Trinkwassererwärmung gilt für Wohn und Nichtwohngebäude, ein sonstiges Gebäude oder für einen Bereich eines Gebäudes.
Bild 1 zeigt die relative Position dieser Norm innerhalb des EPB Normenpakets im Kontext der modularen Struktur wie in EN ISO 52000 1 dargelegt.
ANMERKUNG 1 In CEN ISO/TR 52000 2 findet sich die gleiche Tabelle mit den Nummern (für jedes Modul) der jeweiligen EPB-Normen und den dazugehörigen technischen Berichten, die bereits veröffentlicht wurden oder sich in der Erstellung befinden.
ANMERKUNG 2 Die Module repräsentieren EPB Normen, auch wenn eine EPB-Norm mehr als ein Modul abdecken kann und ein Modul von mehr als einer EPB-Norm abgedeckt werden kann, zum Beispiel jeweils ein vereinfachtes und ein detailliertes Verfahren. Siehe auch 2 und Tabellen A.1 und B.1.
Tabelle 1 zeigt die relative Position der vorliegenden Norm innerhalb des EPBD-Normenpakets
Performance énergétique des bâtiments — Méthode de calcul de la charge thermique nominale — Partie 3 : Charge thermique des systèmes de production d’eau chaude sanitaire et caractérisation des besoins, Module M8-2, M8-3
La présente Norme européenne décrit une méthode pour calculer la puissance et le volume de stockage requis pour le dimensionnement des systèmes de production d’eau chaude sanitaire. Son applicabilité s’étend des appareils de chauffage direct de l’eau (sans volume de stockage et avec une puissance efficace de chauffage comparativement importante) aux systèmes de stockage plus importants avec, comparativement, une puissance de chauffage faible et des volumes de stockage importants.
La présente Norme européenne s’applique aux systèmes de stockage de l’eau suivants :
systèmes de stockage caractérisés par une zone de mélange minimale (comme les réservoirs de stockage à charge stratifiée ou les réservoirs de stockage avec échangeurs de chaleur externes) : ces systèmes sont dénommés dans la présente norme « systèmes de stockage à charge » ;
appareils de chauffage de l’eau à réservoir de stockage et réservoirs de stockage d’eau chaude avec une zone de mélange prononcée (comme les réservoirs de stockage des systèmes de production d’eau chaude sanitaire avec échangeurs de chaleur internes), dénommés dans la présente norme « systèmes de stockage mélangé » ;
et pour différents usages.
Le domaine d’application inclut également des méthodes de normalisation pour déterminer le besoin énergétique pour la production d’eau chaude sanitaire. La présente Norme européenne traite des besoins d’eau chaude sanitaire dans les bâtiments.
Le calcul des besoins énergétiques des systèmes de production d’eau chaude sanitaire s’applique à des bâtiments résidentiels et non résidentiels, un bâtiment ou une zone d’un bâtiment.
La Figure 1 indique la position relative de la présente norme dans l’ensemble de normes PEB, dans le contexte de la structure modulaire définie dans l'EN ISO 52000 1.
NOTE 1 Le CEN ISO/TR 52000 2 contient le même tableau avec, pour chaque module, les numéros des normes PEB pertinentes et les rapports techniques associés qui ont été publiés ou qui sont en cours de préparation.
NOTE 2 Les modules représentent les normes PEB ; toutefois une même norme PEB peut couvrir plus d’un module et un module peut être couvert par plus d’une norme PEB, comme dans le cas d’une procédure simplifiée et d’une procédure détaillée, respectivement. Voir également l’Article 2 et les Tableaux A.1 et B.1
Energijske lastnosti stavb - Metoda za izračun projektnih toplotnih obremenitev - 3. del: Sistemi za pripravo tople sanitarne vode, toplotna obremenitev in opredelitev potreb - Modula M8-2 in M8-3
Ta standard opisuje metodo za izračun moči in potrebnega shranjevalnega prostora za dimenzioniranje sistemov vroče vode za domačo uporabo (DHW). Uporaba zajema vse od neposrednih grelnikov vode (brez shranjevalnega prostora in s primerljivo veliko efektivno močjo gretja) do sistemov za dolgotrajno shranjevanje (npr. sezonsko shranjevanje s primerljivo nizko močjo gretja in veliko shranjevalnega prostora).
Ta standard se uporablja za naslednje sisteme za shranjevanje vode:
– sistemi za polnjenje shranjevanja, za katere je značilno zmanjšano območje mešanja, npr. rezervoarji za shranjevanje s plastnim polnjenjem ali rezervoarji za shranjevanje z zunanjimi izmenjevalniki toplote in
– rezervoarji za vročo vodo in sistemi za shranjevanje, za katere je značilno posebno območje mešanja, to je sistemi shranjevanja z notranjimi izmenjevalniki toplote
ter druge uporabe.
Cilj drugega dela je standardizirati metode za določanje energijskih potreb po gospodinjski topli vodi. Ta standard pokriva potrebe po gospodinjski topli vodi v stavbah.
Izračun energijskih potreb po gospodinjski topli vodi velja za stanovanje, stavbo ali predel stavbe.
Ta standard vključuje tudi energijske potrebe za različne primere uporabe sistemov gospodinjske tople vode (DHW) v urnih, mesečnih in sezonskih korakih, glede na nacionalno privzete vrednosti.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2018
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SIST EN 15316-3-1:2007
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GHO 6LVWHPL]DSULSUDYRWRSOHVDQLWDUQHYRGHWRSORWQDREUHPHQLWHYLQ
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Energy performance of buildings - Method for calculation of the design heat load - Part 3:
Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-
Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der Norm-Heizlast -
Teil 3: Trinkwassererwärmungsanlagen, Heizlast und Bedarfsbestimmung, Module M8-2,
M8-3
Performance énergétique des bâtiments - Méthode de calcul de la charge thermique
nominale - Partie 3 : Charge thermique des systèmes de production d’eau chaude
sanitaire et caractérisation des besoins, Module M8-2, M8-3
Ta slovenski standard je istoveten z: EN 12831-3:2017
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.
EN 12831-3
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2017
EUROPÄISCHE NORM
ICS 91.140.10; 91.140.65 Supersedes EN 15316-3-1:2007
English Version
Energy performance of buildings - Method for calculation
of the design heat load - Part 3: Domestic hot water
systems heat load and characterisation of needs, Module
M8-2, M8-3
Performance énergétique des bâtiments - Méthode de Energetische Bewertung von Gebäuden - Verfahren zur
calcul des déperditions calorifiques de base - Partie 3 : Berechnung der Energieanforderungen und
Charge thermique des systèmes de production d'eau Nutzungsgrade der Anlagen - Teil 3: Dimensionierung
chaude sanitaire et caractérisation des besoins, Module von Trinkwassererwärmungsanlagen und
M8-2, M8-3 Bedarfsbestimmung, Modul M8-2, M8-3
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 12831-3:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 11
3 Terms and definitions . 11
4 Symbols and abbreviations . 13
4.1 Symbols . 13
4.2 Subscripts . 14
5 Description of the methods . 16
5.1 General description of the method for sizing domestic hot water systems . 16
5.2 General description of the methods for calculating the energy needs for domestic
hot water . 17
6 Calculation procedures . 17
6.1 Output data . 17
6.2 Calculation time steps . 17
6.3 Input data . 18
6.3.1 General . 18
6.3.2 Product data . 18
6.3.3 System design data . 19
6.3.4 Operating data and boundary. 19
6.3.5 Other data . 19
6.4 Calculation procedure for sizing domestic hot water systems . 19
6.4.1 Calculation of the energy needs curve for DHW . 19
6.4.2 Energy supply . 22
6.4.3 Procedure for dimensioning the DHW system . 35
6.5 Calculation procedure for determining the energy needs for domestic hot water. 38
6.5.1 Energy need for domestic hot water based on draw-off or load profiles . 38
6.5.2 Energy need for domestic hot water based on volume required . 38
6.5.3 Energy need for domestic hot water based directly on floor area . 40
6.5.4 Tabulated energy need for domestic hot water . 41
7 Quality control . 41
8 Compliance check. 41
Annex A (normative) Template for input data . 42
A.1 Load profiles . 42
A.2 Parameters to calculate energy needs . 42
A.3 Parameters for sizing DHW systems . 43
A.4 General values . 45
Annex B (informative) Default input data . 46
B.1 Load profiles . 46
B.2 Parameters to calculate energy needs . 48
B.3 Parameters for sizing DHW systems . 51
B.4 General values . 56
Bibliography . 57
European foreword
This document (EN 12831-3:2017) 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 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 January 2018, and conflicting national standards shall
be withdrawn at the latest by January 2018.
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.
This document supersedes EN 15316-3-1:2007.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
The changes made to the previous edition are minor editorial corrections:
a) minor improvement readability of Figure 4;
b) correction of an incorrect term in Formula (14);
c) correction of an incorrect symbol in Figure 14.
EN 12831, Energy performance of buildings — Method for the calculation of the design heat load, is
composed with the following parts:
— Part 1: Space heating load, Module M3-3;
— Part 2: Explanation and justification of EN 12831-1, Module M3-3 [CEN/TR];
— Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3;
— Part 4: Explanation and justification of EN 12831-3, Module M8-2, M8-3 [CEN/TR].
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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.
Introduction
CEN/TC 228 deals with heating systems in buildings. Subjects covered by CEN/TC 228 are:
— energy performance calculation for heating systems;
— inspection of heating systems;
— design of heating systems;
— installation and commissioning of heating systems.
This European Standard was developed to cover hourly and minutely time-steps.
This European 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”.
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 exp
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