1、November 2009DEUTSCHE NORM English price group 12No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.140.10!$Zo)“155760
2、6www.din.deDDIN EN 1264-3Water based surface embedded heating and cooling systems Part 3: DimensioningEnglish version of DIN EN 1264-3:2009-11Raumflchenintegrierte Heiz- und Khlsysteme mit Wasserdurchstrmung Teil 3: AuslegungEnglische Fassung DIN EN 1264-3:2009-11SupersedesDIN EN 1264-3:1997-11;toge
3、ther with DIN EN1264-4:2009-11,supersedesDIN EN 15377-2:2008-11www.beuth.deDocument comprises pages21DIN EN 1264-3:2009-11 National foreword This standard has been prepared by Technical Committee CEN/TC 130 “Space heating appliances without integral heat sources” (Secretariat: UNI, Italy). The respo
4、nsible German body involved in its preparation was the Normenausschuss Heiz- und Raumlufttechnik (Heating and Ventilation Technology Standards Committee), Technical Committee NA 041-01-69-15 AK Fubodenheizung (SpA CEN/TC 130/WG 9 und ISO/TC 205/WG 8). DIN EN 1264 consists of the following parts, und
5、er the general title Water based surface embedded heating and cooling systems: Part 1: Definitions and symbols Part 2: Floor heating: Prove methods for the determination of the thermal output using calculation and test methods Part 3: Dimensioning Part 4: Installation Part 5: Heating and cooling sur
6、faces embedded in floors, ceilings and walls Determination of the thermal output This document supersedes DIN EN 1264-3:1997-11. Together with DIN EN 1264-4:2009, this document also supersedes DIN EN 15377-2:2008-11. Amendments This standard differs from DIN EN 1264-3:1997-11 and DIN EN 15377-2:2008
7、-11 as follows: a) The scope has been expanded beyond floor heating to include ceiling and wall heating as well as cooling surfaces in floors, ceilings and walls. Previous editions DIN 4725-3: 1992-05 DIN EN 1264-3: 1997-11 DIN EN 15377-2: 2008-11 2 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN
8、1264-3September 2009ICS 91.140.10 Supersedes EN 1264-3:1997, EN 15377-2:2008 English VersionWater based surface embedded heating and cooling systems -Part 3: DimensioningSystmes de surfaces chauffantes et rafrachissanteshydrauliques intgres - Partie 3 : DimensionnementRaumflchenintegrierte Heiz- und
9、 Khlsysteme mitWasserdurchstrmung - Teil 3: AuslegungThis European Standard was approved by CEN on 1 August 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alt
10、eration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 tran
11、slationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany,
12、Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagemen
13、t Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1264-3:2009: EEN 1264-3:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative References .43 Terms, definitions and symbols .44 Heatin
14、g systems 54.1 Floor heating systems .54.1.1 Basic principles .54.1.2 Boundary conditions .64.1.3 Design .74.1.4 Peripheral areas .94.2 Ceiling heating systems 94.2.1 Basic principles .94.2.2 Boundary conditions 104.2.3 Design 104.3 Wall heating systems . 114.3.1 Basic principles 114.3.2 Boundary co
15、nditions 114.3.3 Design 115 Cooling systems . 125.1 General . 125.1.1 Basic principles 125.1.2 Temperature differences 125.1.3 Regional dew point and standard indoor room temperature . 125.1.4 Temperature difference between room and cooling water 125.1.5 Characteristic curves . 135.1.6 Field of char
16、acteristic curves 135.1.7 Limit curve . 135.1.8 Thermal insulation 135.2 Design 135.2.1 Design value of specific cooling load 135.2.2 Determination of the design flow (inlet) temperature and the design specific thermal output . 135.2.3 Determination of design cooling water flow rate 15Annex A (norma
17、tive) Figures 16DIN EN 1264-3:2009-11 EN 1264-3:2009 (E) 3 Foreword This document (EN 1264-3:2009) has been prepared by Technical Committee CEN/TC 130 “Space heating appliances without heat sources”, the secretariat of which is held by UNI. This European Standard shall be given the status of a natio
18、nal standard, either by publication of an identical text or by endorsement, at the latest by March 2010, and conflicting national standards shall be withdrawn at the latest by March 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
19、ghts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1264-3:1997. Together with EN 1264-4, this document also supersedes EN 15377-2. The series of European Standards EN 1264 “Water based surface embedded heating and cooling
20、 systems“ consists of the following parts: Part 1: Definitions and symbols; Part 2: Floor heating : Prove methods for the determination of the thermal output using calculation and test methods Part 3: Dimensioning; Part 4: Installation; Part 5: Heating and cooling surfaces embedded in floors, ceilin
21、gs and walls Determination of the thermal output. The main change with respect to EN 1264-3:1997 is the expansion of the scope beyond floor heating, with the addition of ceiling and wall heating as well as cooling surfaces in floors, ceilings and walls. According to the CEN/CENELEC Internal Regulati
22、ons, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
23、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1264-3:2009-11 EN 1264-3:2009 (E) 4 1 Scope This European Standard applies to heating and cooling systems embedded into the enclosure surfaces of the room to be heated or to be coole
24、d. This document deals with the use in practical engineering of the results coming from part 2 and 5 and is applicable to floor-, ceiling- and wall heating systems, as well floor-, ceiling- and wall cooling systems. For heating systems, physiological limitations are taken into account when specifyin
25、g the surface temperatures. In the case of floor heating systems the limitations are realised by a design based on the characteristic curves and limit curves determined in accordance with part 2 of this Standard. For cooling systems, only a limitation with respect to the dew point is taken into acco
26、unt. In predominating practice, this means that physiological limitations are included as well. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest e
27、dition of the referenced document (including any amendments) applies. EN 1264-1:1997, Water based surface embedded heating and cooling systems - Part 1: Definitions and symbols EN 1264-2, Water based surface embedded heating and cooling systems - Part 2: Floor heating: Prove methods for the determin
28、ation of the thermal output using calculation and test methods EN 1264-4, Water based surface embedded heating and cooling systems - Part 4: Installation EN 1264-5, Water based surface embedded heating and cooling systems Part 5: Heating and cooling surfaces embedded in floors, ceilings and walls De
29、termination of the thermal output EN 12831, 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 EN ISO 7730, Ergonomics of the thermal envi
30、ronment - Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO 7730:2005) 3 Terms, definitions and symbols For the purposes of this document, the definitions and symbols given in EN 1264-1:1997 apply. DIN
31、EN 1264-3:2009-11 EN 1264-3:2009 (E) 5 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 equation (1), see EN 1264-2. In this equation,
32、 the effect of the temperature drop of the heating water is taken into account. iRiVRVHln= (1) 4.1.1.2 Characteristic curve The characteristic curve describes the relationship between the specific thermal output q of a system and the required temperature difference between heating water and room H.
33、For a simplification, the specific thermal output is taken directly proportional to the temperature difference: q = KH H(2) where the gradient is KH= B )(iimia , calculated in accordance with clause 6 of part 2 of this Standard, or the gradient KHis experimentally determined in accordance with claus
34、e 9 of part 2 of this European Standard. 4.1.1.3 Field of characteristic curves The field of characteristic curves of a floor heating system with a specific pipe spacing T shall at least contain the characteristic curves for values of the thermal resistance R, B= 0, R, B= 0,05, R, B= 0,10 and R, B=
35、0,15 (m2K)/W in accordance with part 2 of this European Standard (see Figure A.1). Values of R, B 0,15 (m2K)/W shall not be used if possible. 4.1.1.4 Limit curves The limit curves in the field of characteristic curves describe in accordance with part 2 of this European Standard the relationship betw
36、een the specific thermal output q and the temperature difference Hbetween the heating water and the room in the case where the physiologically agreed limit values of surface temperatures F,max= 29 C (occupied area) or F,max= 35 C (peripheral area) are reached1. For bathrooms (i= 24 C) the limit curv
37、e for (F,max- i) = 9 K also applies. For design purposes, i.e. the determination of design values of the specific thermal output and the associated temperature difference between heating water and room, the limit curves are valid for the temperature drop of the heating water in a range of 0 K 0,5 th
38、e following equation has to be used: des,H2des,Hdes,V122 += (9) The result of Equation (8) or (9) provides the design flow temperature V,des= V,des+ i. For all other rooms operated at the same flow temperature V,des, for the ratio /H,j 0,5 the associated values for the temperature drop jof the heati
39、ng water are taken from the field of characteristic curves (see Figure A.4) or calculated according to j,Hdes,Vj2=(10) using the temperature differences H,jcorresponding to the respective values of the specific thermal output qj(see Figure A.4). For /H,j 0,5 the temperature drop jhas to be calculate
40、d as follows: ()+= 1341321j,Hj,Hdes,Vj,Hj(1) Note: Equations (8) and (10) are the result of simplifications and therefore valid only under the specified condition /H 0,5. Compared to this, equations (9) and (11) generally are applicable, i.e. for any relationship /H. If the value qdesaccording to eq
41、uation (5) for the room used for design (or for other rooms if the case arises) cannot be obtained under the aforementioned conditions by any pipe spacing, it is recommended to include a peripheral area or to provide supplementary heating surfaces. The supplementary heating surfaces shall be selecte
42、d complying with the purpose and the location. The additional required thermal output Qoutis determined with the following equation: Qout= QN,f QF(12) In this case, the maximum specific thermal output qmaxnow may occur in another room. 4.1.3.3 Heating Mode - Determination of Water Flow rate The tota
43、l thermal output of a floor heating system is composed of the specific thermal output q and the downward heat loss qU, see clause 8 of part 2 of this Standard. These circumstances taking into account, the design water flow rate mHof a heating circuit is calculated as follows: +=uuiuoWFHRqRR1cqAm (13
44、) where (also see Figure A.5): cWspecific heat capacity of water; cW= 4190 J/(kgK)44) Using this value together with q in W/m2in equation (13), mHis provided in kg/s. DIN EN 1264-3:2009-11 EN 1264-3:2009 (E) 9 Roupwards partial heat transmission resistance of the floor structure (see equation (14) R
45、udownwards partial heat transmission resistance of the floor structure (see equation (15) istandard indoor room temperature in accordance with EN1264-2 uindoor temperature of a room under the floor heated room With respect to the thermal resistances indicated in Figure A.5, the following equations a
46、re valid: uuB;osR1R+=(14) ceiling,plaster,ceiling,ins,uRRRRR+= (15) where: 1/ is the heat transfer resistance on the heating floor surface; 1/ = 0,0093 (m2K)/W R;ceilingis the heat transfer resistance on the ceiling under the floor heated room; R;ceiling= 0,17 (m2K)/W NOTE The calculation procedure
47、above described on the basis of Figure A.5 is to understand as a principle one. For other structures, an appropriate modification may be necessary. 4.1.4 Peripheral areas Peripheral areas AR, with an increased surface temperature (up to a maximum of 35 C) are generally situated along the outer walls
48、 of a room with a maximum width of 1 m. As described in clause 4.1.3, design of peripheral areas is based on the higher limit curve (F,max- i) = 15 K (see Figure A.1). In case a series circuit is formed with a heating circuit in the occupied area, the temperature drop in the peripheral area shall be selected, so that the flow temperature, calculated from the lower limit curve, is not exceeded by entry of the heating water from the peripheral area into the occupied area. 4.2 Ceiling heating systems 4.2.1 Basic principles 4.2.1.1 Temperatur
