EN ISO 11855-2:2015

Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 2: Determination of the design heating and cooling capacity (ISO 11855-2:2012)

This European Standard is applicable to water based surface heating and cooling systems in residential, commercial and industrial buildings.
The methods apply to systems integrated into the wall, floor or ceiling construction without any open air gaps.
The methods do not apply to heated or chilled ceiling panels or beams.
This standard provides steady-state calculation methods for determination of the heating and cooling capacity (part 2).
This standard applies also, as appropriate, to the use of other fluids instead of water.
This standard is not applicable for testing of systems.

Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 2: Bestimmung der Auslegungs-Heiz- bzw. Kühlleistung (ISO 11855-2:2012)

Conception de l'environnement des bâtiments - Conception, dimensionnement, installation et contrôle des systèmes intégrés de chauffage et de refroidissement par rayonnement - Partie 2 : Détermination de la puissance calorifique et frigorifique à la conception (ISO 11855-2:2012)

Okoljsko primerna zasnova stavb - Zasnova, dimenzioniranje, vgradnja in kontrola vgrajenih sevalnih ogrevalnih in hladilnih sistemov - 2. del: Določanje načrtovane grelne in hladilne moči (ISO 11855-2:2012)

Ta evropski standard se uporablja za ploskovne sisteme za ogrevanje in hlajenje z vodo v stanovanjskih, poslovnih ter industrijskih stavbah. Metode se uporabljajo za sisteme, vgrajene v stensko, talno ali stropno konstrukcijo brez odprtih vmesnih zračnih prostorov. Metode se ne uporabljajo za ogrevane ali hlajene stropne plošče ali tramove. Ta standard določa ustaljene metode računanja za določanje grelne in hladilne moči (2. del). Ta standard, kadar je to ustrezno, velja tudi za uporabo drugih tekočin namesto vode. Ta standard se ne uporablja za preskušanje sistemov.

General Information

• Status: Withdrawn
• Publication Date: 04-Aug-2015
• Withdrawal Date: 05-Oct-2021
• ICS: 91.140.10 - Central heating systems
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: CEN/TC 228 - Heating systems in buildings
• Drafting Committee: CEN/TC 228 - Heating systems in buildings
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 06-Oct-2021
• Ref Project: SIST EN ISO 11855-2:2015 - Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 2: Determination of the design heating and cooling capacity (ISO 11855-2:2012)

Relations

• Replaces: EN 15377-1:2008 - Heating systems in buildings - Design of embedded water based surface heating and cooling systems - Part 1: Determination of the design heating and cooling capacity
• Effective Date: 08-Jun-2022
• Replaced By: EN ISO 11855-2:2021 - Building environment design - Embedded radiant heating and cooling systems - Part 2: Determination of the design heating and cooling capacity (ISO 11855-2:2021)
• Effective Date: 10-Oct-2018

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 2: Bestimmung der Auslegungs-Heiz- bzw. Kühlleistung (ISO 11855-2:2012)012)Conception de l'environnement des bâtiments - Conception, dimensionnement, installation et contrôle des systèmes intégrés de chauffage et de refroidissement par rayonnement - Partie 2 : Détermination de la puissance calorifique et frigorifique à la conception (ISO 11855-2:2012)Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 2: Determination of the design heating and cooling capacity (ISO 11855-2:2012)91.140.30VLVWHPLVentilation and air-conditioning91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN ISO 11855-2:2015SIST EN ISO 11855-2:2015en,fr,de01-oktober-2015SIST EN ISO 11855-2:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 11855-2
August 2015 ICS 91.140.10; 91.140.30 English Version
Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 2: Determination of the design heating and cooling capacity (ISO 11855-2:2012)
Conception de l'environnement des bâtiments - Conception, dimensionnement, installation et contrôle des systèmes intégrés de chauffage et de refroidissement par rayonnement - Partie 2 : Détermination de la puissance calorifique et frigorifique à la conception (ISO 11855-2:2012)
Umweltgerechte Gebäudeplanung - Planung, Auslegung, Installation und Steuerung flächenintegrierter Strahlheizungs- und -kühlsysteme - Teil 2: Bestimmung der Auslegungs-Heiz- bzw. Kühlleistung (ISO 11855-2:2012)012) This European Standard was approved by CEN on 30 July 2015.
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, 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 © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 11855-2:2015 ESIST EN ISO 11855-2:2015

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. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11855-2:2012 has been approved by CEN as EN ISO 11855-2:2015 without any modification. SIST EN ISO 11855-2:2015

Reference numberISO 11855-2:2012(E)© ISO 2012
INTERNATIONAL STANDARD ISO11855-2First edition2012-10-01Building environment design — Design, dimensioning, installation and control of embedded radiant heating and cooling systems — Part 2: Determination of the design heating and cooling capacity Conception de l'environnement des bâtiments — Conception, construction et fonctionnement des systèmes de chauffage et de refroidissement par rayonnement — Partie 2: Détermination de la puissance calorifique et frigorifique à la conception
ISO 11855-2:2012(E)
©
ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56  CH-1211 Geneva 20 Tel.
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www.iso.org Published in Switzerland
ii
ISO 11855-2:2012(E) © ISO 2012 – All rights reserved
iii Contents Page Foreword . iv Introduction . v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions . 2 4 Symbols and abbreviations . 2 5 Concept of the method to determine the heating and cooling capacity . 3 6 Heat exchange coefficient between surface and space . 4 7 Simplified calculation methods for determining heating and cooling capacity or surface temperature . 6 7.1 Universal single power function . 7 7.2 Thermal resistance methods . 9 8 Use of basic calculation programs . 11 8.1 Basic calculation programs . 11 8.2 Items to be included in a complete computation documentation . 11 9 Calculation of the heating and cooling capacity . 12 Annex A (normative)
Calculation of the heat flux . 13 Annex B (normative)
General resistance method . 36 Annex C (normative)
Pipes embedded in wooden construction . 42 Annex D (normative)
Method for verification of FEM and FDM calculation programs . 50 Annex E (normative)
Values for heat conductivity of materials and air layers . 54 Bibliography . 56
ISO 11855-2:2012(E) iv
ISO 11855-2:2012(E) © ISO 2012 – All rights reserved
v Introduction The radiant heating and cooling system consists of heat emitting/absorbing, heat supply, distribution, and control systems. The ISO 11855 series deals with the embedded surface heating and cooling system that directly controls heat exchange within the space. It does not include the system equipment itself, such as heat source, distribution system and controller.
The ISO 11855 series addresses an embedded system that is integrated with the building structure. Therefore, the panel system with open air gap, which is not integrated with the building structure, is not covered by this series.
The ISO 11855 series shall be applied to systems using not only water but also other fluids or electricity as a heating or cooling medium.
The object of the ISO 11855 series is to provide criteria to effectively design embedded systems. To do this, it presents comfort criteria for the space served by embedded systems, heat output calculation, dimensioning, dynamic analysis, installation, operation, and control method of embedded systems. SIST EN ISO 11855-2:2015

INTERNATIONAL STANDARD ISO 11855-2:2012(E) © ISO 2012 – All rights reserved 1 Building environment design — Design, dimensioning, installation and control of embedded radiant heating and cooling systems — Part 2: Determination of the design heating and cooling capacity 1 Scope This part of ISO 11855 specifies procedures and conditions to enable the heat flow in water based surface heating and cooling systems to be determined relative to the medium differential temperature for systems. The determination of thermal performance of water based surface heating and cooling systems and their conformity to this part of ISO 11855 is carried out by calculation in accordance with design documents and a model. This should enable a uniform assessment and calculation of water based surface heating and cooling systems. The surface temperature and the temperature uniformity of the heated/cooled surface, nominal heat flo
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