EN 1264-3:2021
(Main)Water based surface embedded heating and cooling systems - Part 3: Dimensioning
Water based surface embedded heating and cooling systems - Part 3: Dimensioning
The EN 1264 series gives guidelines for surface embedded heating and cooling systems installed in buildings, residential and non-residential (e.g. office, public, commercial and industrial buildings) and focuses on systems installed for the purpose of thermal comfort.
The EN 1264 series gives guidelines for water based heating and cooling systems embedded into the enclosure surfaces of the room to be heated or to be cooled. It also specifies the use of other heating media instead of water, as appropriate.
The EN 1264 series specifies standardized product characteristics by calculation and testing the thermal output of heating for technical specifications and certification. For the design, construction and operation of these systems, see EN 1264-3 and EN 1264-4 for the types A, B, C, D, H, I and J. For the types E, F and G, see the EN ISO 11855 series.
The systems specified in the EN 1264 series are adjoined to the structural base of the enclosure surfaces of the building, mounted directly or with fixing supports. The EN 1264 series does not specify ceiling systems mounted in a suspended ceiling with a designed open air gap between the system and the building structure which allows the thermally induced circulation of the air. The thermal output of these systems can be determined according to EN 14037 series and EN 14240.
EN 1264-3 specifies the use in practical engineering of the results coming from EN 1264-2 and EN 1264-5.
For heating systems, physiological limitations are taken into account when specifying the surface temperatures. In the case of floor heating systems the limitations are realized by a design based on the characteristic curves and limit curves determined in accordance with EN 1264-2.
For cooling systems, only a limitation with respect to the dew point is taken into account. In predominating practice, this means that physiological limitations are included as well.
Raumflächenintegrierte Heiz- und Kühlsysteme mit Wasserdurchströmung - Teil 3: Auslegung
Die Normenreihe EN 1264 gibt Leitlinien für in Wohn- und anderen Gebäuden (z. B. Bürogebäuden, öffentlichen Gebäuden sowie Gewerbe- und Industriegebäuden) installierte raumflächenintegrierte Heiz- und Kühlsysteme und legt einen Schwerpunkt auf Systeme, die für den Zweck der thermischen Behaglichkeit installiert werden.
Die Normenreihe EN 1264 gibt Leitlinien für Heiz- und Kühlsysteme mit Wasserdurchströmung, die in die Raumum¬schließungsflächen des zu heizenden oder des zu kühlenden Raumes eingebettet sind. Sie legt ggf. auch die entsprechende Verwendung anderer Heizmittel als Wasser fest.
Die Normenreihe EN 1264 legt die Identifizierung standardisierter Produktmerkmale durch Berechnung und Prüfung der Wärmeleistung der Heizung für technische Spezifikationen und die Zertifizierung fest. Für das Design, den Bau und den Betrieb dieser Anlagen siehe EN 1264 3 und EN 1264 4 für die Typen A, B, C, D, H, I und J. Für die Typen E, F und G siehe Normenreihe EN ISO 11855.
Die in der Normenreihe EN 1264 festgelegten Systeme grenzen an den tragenden Untergrund der Umschließungsflächen des Gebäudes an und werden direkt oder mit Befestigungshalterungen angebracht. EN 1264 trifft keine Festlegungen für in abgehängten Decken montierte Deckensysteme mit einem auslegungsgemäßen offenen Luftspalt zwischen dem System und der Gebäudestruktur, der eine thermisch induzierte Umwälzung der Luft erlaubt. Die Wärmeleistung dieser Systeme kann nach der Normenreihe EN 14037 und EN 14240 bestimmt werden.
EN 1264 3 legt die Verwendung der Ergebnisse aus EN 1264 2 und EN 1264 5 im praktischen Ingenieur¬wesen fest.
Im Falle von Heizsystemen werden die physiologisch bedingten Grenzen bei der Festlegung der Oberflächentemperaturen berücksichtigt. Im Falle von Fußbodenheizsystemen wird den Grenzen durch eine Auslegung Rechnung getragen, die auf den nach EN 1264 2 ermittelten Kennlinien und Grenzkurven basiert.
Im Falle von Kühlsystemen wird eine Leistungsbegrenzung ausschließlich durch den Taupunkt berücksichtigt. In der Praxis bedeutet dies in der Regel, dass dadurch zugleich die physiologisch bedingten Grenzen einbezogen werden.
Systèmes de surfaces chauffantes et rafraîchissantes hydrauliques intégrées - Partie 3 : Dimensionnement
Ploskovni sistemi za ogrevanje in hlajenje z vodo - 3. del: Dimenzioniranje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN 1264-3:2009
Ploskovni sistemi za ogrevanje in hlajenje z vodo - 3. del: Dimenzioniranje
Water based surface embedded heating and cooling systems - Part 3: Dimensioning
Raumflächenintegrierte Heiz- und Kühlsysteme mit Wasserdurchströmung - Teil 3:
Auslegung
Systèmes de surfaces chauffantes et rafraîchissantes hydrauliques intégrées - Partie 3 :
Dimensionnement
Ta slovenski standard je istoveten z: EN 1264-3:2021
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1264-3
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 1264-3:2009
English Version
Water based surface embedded heating and cooling
systems - Part 3: Dimensioning
Systèmes de surfaces chauffantes et rafraîchissantes Raumflächenintegrierte Heiz- und Kühlsysteme mit
hydrauliques intégrées - Partie 3 : Dimensionnement Wasserdurchströmung - Teil 3: Auslegung
This European Standard was approved by CEN on 12 April 2021.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1264-3:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Heating systems . 5
4.1 Floor heating systems . 5
4.1.1 Basic principles . 5
4.1.2 Boundary conditions . 6
4.1.3 Design . 9
4.1.4 Peripheral areas . 11
4.2 Ceiling heating systems . 12
4.2.1 Basic principles . 12
4.2.2 Boundary conditions . 12
4.2.3 Design . 13
4.3 Wall heating systems . 13
4.3.1 Basic principles . 13
4.3.2 Boundary conditions . 13
4.3.3 Design . 14
5 Cooling systems . 14
5.1 General . 14
5.1.1 Basic principles . 14
5.1.2 Temperature differences . 14
5.1.3 Regional dew point and standard indoor room temperature . 14
5.1.4 Temperature difference between room and cooling water . 15
5.1.5 Characteristic curves . 15
5.1.6 Field of characteristic curves . 15
5.1.7 Limit curve . 15
5.1.8 Thermal insulation . 16
5.2 Design . 16
5.2.1 Pressure loss . 16
5.2.2 Design specific cooling load . 16
5.2.3 Determination of the design flow (inlet) temperature and the design specific
thermal output . 16
5.2.4 Determination of the design cooling water flow rate . 18
Annex A (normative) Figures . 19
Bibliography . 21
European foreword
This document (EN 1264-3:2021) has been prepared by Technical Committee CEN/TC 130 “Space
heating appliances without integral heat sources”, the secretariat of which is held by UNI.
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 November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
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 1264-3:2009.
The main changes compared to the previous edition are listed below:
a) Clarification of the Scope;
b) Improved wording, especially the term “prove method”;
c) Deletion of the Note in 4.1.2.2;
d) Addition of new subclauses 4.1.3.1, 4.2.3.1, 4.3.3.1 and 5.2.1.1 Pressure loss;
e) Modification of the maximum average surface temperature for ceiling heating systems in 4.2.1.4;
f) Figures 1 and 3 replaced with Figures A.2 and A.3;
2 2
g) Correction of Formula (15) from 1/α = 0,009 3 (m ∙K)/W to 1/α = 0,092 6 (m ∙K)/W.
EN 1264, Water based surface embedded heating and cooling systems, consists of the following parts:
— Part 1: Definitions and symbols;
— Part 2: Floor heating: Methods for the determination of the thermal output using calculations and
experimental tests;
— Part 3: Dimensioning;
— Part 4: Installation;
— Part 5: Determination of the thermal output for wall and ceiling heating and for floor, wall and ceiling
cooling.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
The EN 1264 series gives guidelines for surface embedded heating and cooling systems installed in
buildings, residential and non-residential (e.g. office, public, commercial and industrial buildings) and
focuses on systems installed for the purpose of thermal comfort.
The EN 1264 series gives guidelines for water based heating and cooling systems embedded into the
enclosure surfaces of the room to be heated or to be cooled. It also specifies the use of other heating
media instead of water, as appropriate.
The EN 1264 series specifies standardized product characteristics by calculation and testing the
thermal output of heating for technical specifications and certification. For the design, construction and
operation of these systems, see EN 1264-3 and EN 1264-4 for the types A, B, C, D, H, I and J. For the
types E, F and G, see the EN ISO 11855 series.
The systems specified in the EN 1264 series are adjoined to the structural base of the enclosure
surfaces of the building, mounted directly or with fixing supports. The EN 1264 series does not specify
ceiling systems mounted in a suspended ceiling with a designed open air gap between the system and
the building structure which allows the thermally induced circulation of the air. The thermal output of
these systems can be determined according to EN 14037 series and EN 14240.
EN 1264-3 specifies the use in practical engineering of the results coming from EN 1264-2 and
EN 1264-5.
For heating systems, physiological limitations are taken into account when specifying the surface
temperatures. In the case of floor heating systems the limitations are realized by a design based on the
characteristic curves and limit curves determined in accordance with EN 1264-2.
For cooling systems, only a limitation with respect to the dew point is taken into account. In
predominating practice, this means that physiological limitations are included as well.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1264-1:2021, Water based surface embedded heating and cooling systems — Part 1: Definitions and
symbols
EN 1264-2:2021, Water based surface embedded heating and cooling systems — Part 2: Floor heating:
Methods for the determination of the thermal output using calculations and experimental tests
EN 1264-4:2021, Water based surface embedded heating and cooling systems — Part 4: Installation
EN 1264-5:2021, Water based surface embedded heating and cooling systems — Part 5: Heating and
cooling surfaces embedded in floors, ceilings and walls — Determination of the thermal output
EN 12831 (all parts), Heating systems in buildings — Method for calculation of the design heat load
EN 15243, Ventilation for buildings — Calculation of room temperatures and of load and energy for
buildings with room conditioning systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1264-1:2021 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Heating systems
4.1 Floor heating systems
4.1.1 Basic principles
4.1.1.1 Temperature difference between heating water and room
The temperature difference between the heating water and the room is calculated using Formula (1),
see also EN 1264-2. In this Formula, the effect
...
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