1、BSI Standards PublicationBS EN ISO 11855-3:2015Building environment design Design, dimensioning,installation and control ofembedded radiant heating andcooling systemsPart 3: Design and dimensioningBS EN ISO 11855-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation
2、of EN ISO11855-3:2015. It is identical to ISO 11855-3:2012.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/24, Central heating installations.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purp
3、ort to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 88074 2ICS 91.140.10; 91.140.30Compliance with a British Standard cannot confer immunity fromlegal
4、obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11855-3 August 2015 ICS 91.140.10; 91.140.30 English Versi
5、on Building environment design - Design, dimensioning, installation and control of embedded radiant heating and cooling systems - Part 3: Design and dimensioning (ISO 11855-3:2012) Conception de lenvironnement des btiments - Normes pour la conception, la construction et le fonctionnement dessystmes
6、de chauffage et de refroidissement par rayonnement - Partie 3: Conception et dimensionnement (ISO 11855-3:2012) Umweltgerechte Gebudeplanung - Planung, Auslegung, Installation und Steuerung flchenintegrierter Strahlheizungs- und -khlsysteme - Teil 3: Planung und Auslegung (ISO 11855-3:2012) This Eur
7、opean 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 con
8、cerning 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 i
9、nto 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,
10、 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMIT
11、EE 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 ISO 11855-3:2015 EBS EN ISO 11855-3:2015EN ISO 11855-3:2015 (E) 3 European foreword The text of ISO
12、 11855-3:2012 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 11855-3:2015 by Technical Committee CEN/TC 228 “Heating systems and water based cooling systems in buildings”
13、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 2016, and conflicting national standards shall be withdrawn at the latest by February 2016. This s
14、tandard 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 for the design and evaluation of the performance of the system. For identifying product characteris
15、tics 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 some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shal
16、l 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, Denm
17、ark, 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 no
18、tice The text of ISO 11855-3:2012 has been approved by CEN as EN ISO 11855-3:2015 without any modification. BS EN ISO 11855-3:2015ISO 11855-3:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols and abbr
19、eviated terms . 15 Radiant panel . 35.1 Floor heating systems . 35.2 Ceiling heating systems 115.3 Wall heating systems 125.4 Floor cooling systems . 135.5 Ceiling cooling systems . 145.6 Wall cooling systems . 14Bibliography .15BS EN ISO 11855-3:2015ISO 11855-3:2012(E)ForewordISO (the International
20、 Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been est
21、ablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardiz
22、ation.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting
23、. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility 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 pa
24、tent rights.ISO 11855-3 was prepared by Technical Committee ISO/TC 205, Building environment design.ISO 11855 consists of the following parts, under the general title Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems: Part 1: D
25、efinition, symbols, and comfort criteria Part 2: Determination of the design and heating and cooling capacity Part 3: Design and dimensioning Part 4: Dimensioning and calculation of the dynamic heating and cooling capacity of Thermo Active Building Systems (TABS) Part 5: Installation Part 6: Control
26、Part 1 specifies the comfort criteria which should be considered in designing embedded radiant heating and cooling systems, since the main objective of the radiant heating and cooling system is to satisfy thermal comfort of the occupants. Part 2 provides steady-state calculation methods for determin
27、ation of the heating and cooling capacity. Part 3 specifies design and dimensioning methods of radiant heating and cooling systems to ensure the heating and cooling capacity. Part 4 provides a dimensioning and calculation method to design Thermo Active Building Systems (TABS) for energy saving purpo
28、ses, since radiant heating and cooling systems can reduce energy consumption and heat source size by using renewable energy. Part 5 addresses 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
29、maximum performance which was intended in the design stage when the system is actually being operated in a building.iv ISO 2012 All rights reservedBS EN ISO 11855-3:2015ISO 11855-3:2012(E)IntroductionThe radiant heating and cooling system consists of heat emitting/absorbing, heat supply, distributio
30、n, 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 em
31、bedded 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 a
32、s 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 con
33、trol method of embedded systems. ISO 2012 All rights reserved vBS EN ISO 11855-3:2015BS EN ISO 11855-3:2015Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems Part 3: Design and dimensioning1 ScopeThis part of ISO 11855 establish
34、es a system design and dimensioning method to ensure the heating and cooling capacity of the radiant heating and cooling systems.The ISO 11855 series is applicable to water based embedded surface heating and cooling systems in residential, commercial and industrial buildings. The methods apply to sy
35、stems 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 applies also, as appropriate, to the use of fluids other than water as a heating or
36、 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 referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the editio
37、n cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 12831, Heating systems in buildings Method for calculation of the design heat loadEN 15243, Ventilation for buildings Calculation of room temperatures and of load and energy f
38、or buildings with room conditioning systemsISO 11855-1, Building environment design Design, dimensioning, installation and control of embedded radiant heating and cooling systems Part 1: Definition, symbols, and comfort criteriaISO 11855-2, Building environment design Design, dimensioning, installat
39、ion and control of embedded radiant heating and cooling systems Part 2: Determination of the design heating and cooling capacity3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 11855-1 apply.4 Symbols and abbreviated termsFor the purposes of this docum
40、ent, the symbols and abbreviations in Table 1 apply.Table 1 Symbols and abbreviated termsSymbol Unit QuantityAFm2Area of the heating/cooling surfaceINTERNATIONAL STANDARD ISO 11855-3:2012(E) ISO 2012 All rights reserved 1BS EN ISO 11855-3:2015ISO 11855-3:2012(E)Symbol Unit QuantityAAm2Area of the oc
41、cupied heating/cooling surfaceARm2Area of the peripheral heating/cooling surfaceCWJ/(kgK) Specific heat of mediumKHW/(m2K) Equivalent heat transmission coefficientlpm Distance between the joistslWm Thickness of the joistM kg/s Design heating/cooling medium flow rateqdesW/m2Design heat fluxqdes,AW/m2
42、Design heat flux in the occupied areaqdes,RW/m2Design heat flux in the peripheral areaqGW/m2Limit heat fluxqmaxW/m2Maximum design heat fluxQdesW Design heating/cooling capacityQNW Design heating/cooling loadQN,sW Design sensible cooling loadQN,lW Design latent cooling loadQoutW Heat output of supple
43、mentary heating equipmentRo(m2K)/W Partial inwards heat transmission resistance of the surface structureRu(m2K)/W Partial outwards heat transmission resistance of the surface structureR,B(m2K)/W Thermal resistance of surface coveringR,ins(m2K)/W Back side thermal resistance of insulating layersinsm
44、Effective thickness of thermal insulating layerW m Pipe spacingh W/(m2K) Heat transfer coefficientinsW/(mK) Effective thermal conductivity of the thermal insulation layeriW/(mK) Thermal conductivity of the thermal insulation layer between the joistswW/(mK) Thermal conductivity of the joistF,maxC Max
45、imum surface temperatureF,minC Minimum surface temperatureiC Design indoor temperatureRC Return temperature of heating/cooling mediumVC Supply temperature of heating/cooling mediumV,desC Design supply temperature of heating/cooling mediumHK Heating/cooling medium differential temperatureH,desK Desig
46、n heating/cooling medium differential temperatureH,GK Limit of heating/cooling medium differential temperatureV,desK Design heating/cooling medium differential supply temperature K Temperature drop/rise between supply and return mediumTable 1 (continued)2 ISO 2012 All rights reservedBS EN ISO 11855-
47、3:2015ISO 11855-3:2012(E)5 Radiant panel5.1 Floor heating systems5.1.1 Design procedureFloor heating system design requires determining heating surface area, type, pipe size, pipe spacing, supply temperature of the heating medium, and design heating medium flow rate. The design steps are as follows:
48、Step 1: Calculate the design heating load QN. The design heating load QNshall not include the adjacent heat losses. This step should be conducted in accordance with a standard for heating load calculation, such as EN 12831, based on an index such as operative temperature (OT) (see ISO 11855-1).Step
49、2: Determine the area of the heating surface AF, excluding any area covered by immovable objects or objects fixed to the building structure.Step 3: Establish a maximum permissible surface temperature in accordance with ISO 11855-1.Step 4: Determine the design heat flux qdesaccording to Equation (1). For floor heating systems including a peripheral area, the design heat flux of peripheral area qdes,Rand the design heat flux of occupied area qdes,Ashall be calculated respectively on the area of the periphe
