1、BSI Standards PublicationBS EN ISO 11855-4:2015Building environment design Design, dimensioning,installation and control ofembedded radiant heating andcooling systemsPart 4: Dimensioning and calculation of thedynamic heating and cooling capacity ofThermo Active Building Systems (TABS)BS EN ISO 11855
2、-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO11855-4:2015. It is identical to ISO 11855-4:2012. It supersedes BS EN15377-3:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/24, Central heating i
3、nstallations.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by
4、 BSI StandardsLimited 2015ISBN 978 0 580 88072 8ICS 91.140.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2015.Amendments issued since publicationDate
5、 Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11855-4 August 2015 ICS 91.140.10; 91.140.30 Supersedes EN 15377-3:2007English Version Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 4: Dimensi
6、oning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS) (ISO 11855-4:2012) Conception de lenvironnement des btiments - Conception, construction et fonctionnement des systmes de chauffage et de refroidissement par rayonnement - Partie 4: Dimensionnem
7、ent et calculs relatifs au chauffage adiabatique et la puissance frigorifique pour systmes thermoactifs (TABS) (ISO 11855-4:2012) Umweltgerechte Gebudeplanung - Planung, Auslegung, Installation und Steuerung flchenintegrierter Strahlheizungs- und -khlsysteme - Teil 4: Auslegung und Berechnung der dy
8、namischen Wrme- und Khlleistung fr thermoaktive Bauteilsysteme (TABS) (ISO 11855-4:2012) 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 o
9、f 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
10、). 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,
11、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
12、 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 IS
13、O 11855-4:2015 EBS EN ISO 11855-4:2015EN ISO 11855-4:2015 (E) 3 European foreword The text of ISO 11855-4:2012 has been prepared by Technical Committee ISO/TC 205 “Building environment design” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11855-4:2015
14、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 February 2
15、016, and conflicting national standards shall be withdrawn at the latest by February 2016. This standard is applicable for design, construction and operation of radiant heating and cooling systems. The methods defined in part 2 are intended to determine the design heating or cooling capacity used fo
16、r the design and evaluation of the performance of the system. For identifying product characteristics by testing and proving the thermal output of heating and cooling surfaces embedded in floors, ceilings and walls the standard series EN 1264 can be used. Attention is drawn to the possibility that s
17、ome 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. This document supersedes EN 15377-3:2007. According to the CEN-CENELEC Internal Regulations, the national standards organizations
18、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, Ne
19、therlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11855-4:2012 has been approved by CEN as EN ISO 11855-4:2015 without any modification. BS EN ISO 11855-4:2015ISO 11855-4:2012(E) ISO 2012 Al
20、l rights reserved iiiContents Page Foreword iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols and abbreviations 1 5 The concept of Thermally Active Surfaces (TAS) 6 6 Calculation methods . 11 6.1 General . 11 6.2 Rough sizing method 12 6.3 Simplified sizing
21、 by diagrams 13 6.4 Simplified model based on finite difference method (FDM) 19 6.4.1 Cooling system 20 6.4.2 Hydraulic circuit and slab . 20 6.4.3 Room . 22 6.4.4 Limits of the method . 24 6.5 Dynamic building simulation programs 25 7 Input for computer simulations of energy performance . 25 Annex
22、A (informative) Simplified diagrams 26 Annex B (normative) Calculation method 31 B.1. Pipe level 31 B.2. Thermal nodes composing the slab and room 31 B.3. Calculations for the generic h-th hour 35 B.4 Sizing of the system 41 Annex C (informative) Tutorial guide for assessing the model 42 Annex D (in
23、formative) Computer program . 44 Bibliography 52 BS EN ISO 11855-4:2015ISO 11855-4:2012(E) iv ISO 2012 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International
24、Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, al
25、so take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committ
26、ees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the poss
27、ibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11855-4 was prepared by Technical Committee ISO/TC 205, Building environment design. ISO 11855 consists of the following parts,
28、 under the general title Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems: Part 1: Definition, symbols, and comfort criteria Part 2: Determination of the design and heating and cooling capacity Part 3: Design and dimensioning
29、Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS) Part 5: Installation Part 6: Control Part 1 specifies the comfort criteria which should be considered in designing embedded radiant heating and cooling systems, since the main ob
30、jective of the radiant heating and cooling system is to satisfy thermal comfort of the occupants. Part 2 provides steady-state calculation methods for determination of the heating and cooling capacity. Part 3 specifies design and dimensioning methods of radiant heating and cooling systems to ensure
31、the heating and cooling capacity. Part 4 provides a dimensioning and calculation method to design Thermo Active Building Systems (TABS) for energy-saving purposes, since radiant heating and cooling systems can reduce energy consumption and heat source size by using renewable energy. Part 5 addresses
32、 the installation process for the system to operate as intended. Part 6 shows a proper control method of the radiant heating and cooling systems to ensure the maximum performance which was intended in the design stage when the system is actually being operated in a building. BS EN ISO 11855-4:2015IS
33、O 11855-4:2012(E) ISO 2012 All rights reserved vIntroduction 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 exchang
34、e 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
35、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 th
36、is, 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. BS EN ISO 11855-4:2015BS EN ISO 11855-4:2015INTERNATIONAL STANDARD ISO 11855-4:2012(E) ISO 2012 All rig
37、hts reserved 1Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS) 1 Scope This part of ISO 11855 allows the
38、 calculation of peak cooling capacity of Thermo Active Building Systems (TABS), based on heat gains, such as solar gains, internal heat gains, and ventilation, and the calculation of the cooling power demand on the water side, to be used to size the cooling system, as regards the chiller size, fluid
39、 flow rate, etc. This part of ISO 11855 defines a detailed method aimed at the calculation of heating and cooling capacity in non-steady state conditions. The ISO 11855 series is applicable to water based embedded surface heating and cooling systems in residential, commercial and industrial building
40、s. The methods apply to systems integrated into the wall, floor or ceiling construction without any open air gaps. It does not apply to panel systems with open air gaps which are not integrated into the building structure. The ISO 11855 series also applies, as appropriate, to the use of fluids other
41、 than water as a heating or cooling medium. The ISO 11855 series is not applicable for testing of systems. The methods do not apply to heated or chilled ceiling panels or beams. 2 Normative references The following referenced documents are indispensable for the application of this document. For date
42、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 11855-1, Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems Part 1: Defi
43、nition, symbols, and comfort criteria 3 Terms and definitions For the purposes of this document, the terms and definitions in ISO 11855-1 apply. 4 Symbols and abbreviations For the purposes of this part of ISO 11855, the symbols and abbreviations in Table 1 apply: BS EN ISO 11855-4:2015ISO 11855-4:2
44、012(E) 2 ISO 2012 All rights reservedTable 1 Symbols and abbreviations Symbol Unit Quantity FA m2Area of the heating/cooling surface area WA m2Total area of internal vertical walls (i.e. vertical walls, external faades excluded) C J/(m2K) Specific thermal capacity of the thermal node under considera
45、tion WC J/(m2K) Average specific thermal capacity of the internal walls jc J/(kgK) Specific heat of the material constituting the j-th layer of the slab wc J/(kgK) Specific heat of water ad m External diameter of the pipe EDaykWh/m2Specific daily energy gains hrmf - Running mode (1 when the system i
46、s running; 0 when the system is switched off) in the h-th hour sf - Design safety factor v F-CF - View factor between the floor and the ceiling v F-EWF - View factor between the floor and the external walls v F-WF - View factor between the floor and the internal walls A-Ch W/(m2K) Convective heat tr
47、ansfer coefficient between the air and the ceiling A-Fh W/(m2K) Convective heat transfer coefficient between the air and the floor A-Wh W/(m2K) Convective heat transfer coefficient between the air and the internal walls F-Ch W/(m2K) Radiant heat transfer coefficient between the floor and the ceiling
48、 F-Wh W/(m2K) Radiant heat transfer coefficient between the floor and the internal walls HAW/K Heat transfer coefficient between the thermal node under consideration and the air thermal node (“A”) HCW/K Heat transfer coefficient between the thermal node under consideration and the ceiling surface th
49、ermal node (“C”) HCircuitW/K Heat transfer coefficient between the thermal node under consideration and the circuit HCondDownW/K Heat transfer coefficient between the thermal node under consideration and the next one HCondUpW/K Heat transfer coefficient between the thermal node under consideration and the previous one HConv- Fraction of internal convective heat gains acting on the thermal node under consideration HFW/K Heat transfer coefficient between the thermal node under consideration and the floor surface thermal
