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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1264-3 : 1998 The E
2、uropean Standard EN 1264-3 : 1997 has the status of a British Standard ICS 91.140.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Floor heating Systems and components Part 3. Dimensioning Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Uncontrolled Copy, BSI This British Stan
3、dard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI 1998 ISBN 0 580 28901 X BS EN 1264-3 : 1998 Amendments issued since publication Amd. No.DateText affected National for
4、eword This British Standard is the English language version of EN 1264-3 : 1997. The UK participation in its preparation was entrusted to Technical Committee RHE/6, Air or space heaters or coolers without combustion, which has the responsibility to: aid enquirers to understand the text; present to t
5、he responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request
6、to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI S
7、tandards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. Licensed copy:PONTYPRIDD
8、 COLLEGE, 07/04/2008, Uncontrolled Copy, BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide fo
9、r CEN national Members. Ref. No.EN 1264-3 : 1997 E EUROPEAN STANDARDEN 1264-3 NORME EUROPE ENNE EUROPA ISCHE NORM August 1997 ICS 91.140.10 Descriptors: Heating, hot water heating, heated floors, design, temperature, variation curves, limits, computation, thermal insulation, heat emission, specific
10、area English version Floor heating Systems and components Part3: Dimensioning Chauffage par le sol Syste mes et composants Partie 3: Dimensionnement Fuboden-Heizung Systeme und Komponenten Teil 1: Auslegung This European Standard was approved by CEN on 1997-07-11. CEN members are bound to comply wit
11、h 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 Central Secretari
12、at 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 Central Secretariat has the same status as the official
13、versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Unc
14、ontrolled Copy, BSI Page 2 EN 1264-3 : 1997 BSI 1998 Foreword This European Standard 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 st
15、andard, either by publication of an identical text or by endorsement, at the latest by February 1998, and conflicting national standards shall be withdrawn at the latest by February 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri
16、es are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 Introduction3 1Scope3 2Normati
17、ve references3 3Definitions and symbols3 4Basic principles3 4.1Heating medium differential temperature3 4.2Performance characteristic curve3 4.3Field of system characteristic curves3 4.4Limit curves3 4.5Thermal inertia5 5Boundary conditions and limits5 5.1Supply pipes to adjacent rooms5 5.2Downward
18、thermal insulation5 6Design6 6.1Design heat flow density6 6.2Determining the design supply temperature6 6.3Determining the design heating medium flow rate8 7Peripheral zones8 Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Uncontrolled Copy, BSI ? Page 3 EN 1264-3 : 1997 BSI 1998 1)National regulation
19、s can limit the temperature to a lower value. Introduction This European Standard for floor heating systems consists of the following parts : Part 1: Definitions and Symbols Part 2: Determination of the thermal output Part 3: Dimensioning Part 4: Installation 1 Scope This standard is applicable to h
20、ot water floor heating systems as defined in EN 1264-1. Physiological limitations are taken into account when specifying the floor surface temperature. The design is based on performance characteristic curves and limit curves calculated in accordance with EN 1264-2. 2 Normative references This Europ
21、ean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate place in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications a
22、pply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 1264-1 : 1997Floor heating Systems and components Part 1: Definitions and Symbols EN 1264-2 : 1997Floor heating Systems and comp
23、onents Part 2: Determination of the thermal output prEN 1264-4 : 1993 Floor heating Systems and components Part 4: Installation 3 Definitions and symbols For the purposes of this standard, the definitions and symbols given in EN 1264-1 apply. 4 Basic principles 4.1 Heating medium differential temper
24、ature The heating medium differential temperature DuHis calculated using equation (1) (see EN 1264-2). In doing so, the effect of the temperature drop is taken into account: DuH=(1) uV2 uR ln uV2 ui uR2 ui 4.2 Performance characteristic curve The performance characteristic curve describes the relati
25、onship between the heat flow density q of a system and the required heating medium differential temperature. As a simplification, the heat flow density is taken to be directly proportional to the differential temperature of the heating medium: q = KH DuH(2) where: KH= B i P(aimi) in accordance with
26、Part 2 of this European Standard. 4.3 Field of system characteristic curves The field of characteristic curves of a floor heating system with a specific pipe spacing T shall at least contain performance characteristic curves for Rl,B= 0 and three different values of floor covering thermal resistance
27、s in accordance with clause 9 of EN 1264-2 : 1997 including the limit curves (see figure 1). 4.4 Limit curves The limit curves in the field of system characteristic curves describe the relationship between the heating medium differential temperature and the heat flow density for the limit case tempe
28、rature drop, where s = 0 and at which the maximum floor surface temperature reaches the physiologically agreed limit value uF,max(29 C for residence areas, 35 C for peripheral areas)1). During design they apply for the determination of heat flow densities and associated differential temperatures whe
29、re 0 K 0,5, the following applies: DuV,des= DuH,des+(9) s 2 s2 12DuH,des For all other rooms operated at the same supply differential temperature Duv,des, the associated temperature drops for determining the water flow for (sj/DuH,j) 0,5, the temperature drop sjis calculated as follows: sj= 3DuH,j 2
30、1 (11) 1 + 4(DuV,des2 DuH,j) 3DuH,j If the value qdesas per equation (5) cannot be attained under the aforementioned conditions by any pipe spacing for the room used for the design, it is recommended either to have peripheral area and/or to provide alternative additional heating surfaces. The additi
31、onal heating surfaces shall be selected to suit the purpose and location. The additionally required thermal performance is as per the following equation: Qout= QN, f2 QF(12) The maximum design heat flow density can now occur in another room. Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Uncontrolled
32、 Copy, BSI ? Page 8 EN 1264-3 : 1997 BSI 1998 Figure 5. Schematic construction of a ceiling structure with hot water floor heating 4)When using this numerical value, q in W/m2is used in equation (13); mHis then produced in kg/s. 6.3 Determining the design heating medium flow rate The design heating
33、medium flow rate mHof a heating circuit is calculated as follows: mH=(13) AF q s cw 1 + Ro Ru ui2 uu q Ru The partial heat upward transfer resistance of the floor structure Ro(heat transmission resistance) covers the upward heat conduction and heat transmission resistances: Ro=+ Rl,B+(14) 1 a Su lu
34、where: = 0,093 m2 K/W 1 a The sum of the downward heat conduction and transmission resistances is: Ru= Rl,ins+ Rl,ceiling+ Rl,plaster+ Ra,ceiling(15) where: Ra,ceiling= 0,17m2 k/W The arrangement of the individual resistances in the floor construction is shown in figure 5. The specific heat capacity
35、 of the water cW4) is 4190 J/kgK 7 Peripheral zones The peripheral areas ARwith an increased surface temperature (up to a maximum of 35 C) are generally situated along the outer walls of a room with a maximum width of 1 m. As described in clause 6, their design is achieved by means of a higher limit
36、 curve for uF,max(see figure 1). The temperature drop in the peripheral area is to be selected such that where a series circuit is formed with a heating circuit in the occupied area, the supply excess temperature, calculated from the lower limit curve, is not exceeded due to entry of the heating med
37、ium from the peripheral area into the occupied area. Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Uncontrolled Copy, BSI blank Licensed copy:PONTYPRIDD COLLEGE, 07/04/2008, Uncontrolled Copy, BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
38、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Sta
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