BS EN 1264-5-2008 内部水基表面加热和冷却系统.第5部分地板,天花板和墙内部加热和冷却表面.热输出的测定.pdf
《BS EN 1264-5-2008 内部水基表面加热和冷却系统.第5部分地板,天花板和墙内部加热和冷却表面.热输出的测定.pdf》由会员分享,可在线阅读,更多相关《BS EN 1264-5-2008 内部水基表面加热和冷却系统.第5部分地板,天花板和墙内部加热和冷却表面.热输出的测定.pdf(16页珍藏版)》请在三一文库上搜索。
1、 W - - - - - - - - - -8- - - 2- - 77- - - 2- 77- - - - - - - - 7 - R,B, obtained from EN 1264-2. In this European Standard, generally R* ,B = 0,15 m 2K/W applies; R is the additional thermal transfer resistance to be calculated for the surface in question, see Equation (3) and Table A.1. R = 1/ - 1/
2、10.8 m2 K/W) (3) In the case of wall heating and cooling systems, the results of the calculation method described above stringently are valid only for heating or cooling surfaces which fully cover the respective wall. But the accuracy is also sufficient for cases where the wall is partially covered.
3、 5 Prove report For floor heating systems EN 1264-2 applies. For other systems which are recalculated the following applies. For a given construction the results shall be documented for each scheduled pipe spacing T and each scheduled thickness sU above the pipe. The testing body presents this valid
4、 calculation results in a prove report. The following equations and the standard values (see below) represent the results. qH = f( H,R,B) (4) qC = f( C,R,B) (5) where qH is the specific thermal output of the heating surface H is the temperature difference between the average medium temperature and t
5、he room qC is the specific thermal output of the cooling surface C is the temperature difference between the room and the average medium temperature The Equation (4) and or Equation (5) are shown in a field of characteristic curves with linear coordinates, see Figure A.1 and Figure A.2. The characte
6、ristic curves are drawn for values of the thermal resistance R , B = 0, R , B = 0,05, R, B = 0,10 and R, B = 0,15 m 2 K/W. Values of R , B 0,15 m 2 K/W are not in accordance with this standard. The values of standard specific thermal output qH,N and qC,N are calculated with Equation (2). For heating
7、 systems a standard temperature difference H,N = 10 K, EN 1264-5:2008 (E) 7 for cooling systems a standard temperature difference C,N = 8 K applies. A graphic description is given in Figure A.1 and Figure A.2. The proved system shall be identified by a construction drawing and a technical descriptio
8、n in accordance with EN 1264-2:2008 Clause 5. These documents shall contain all dimensions and materials which influence the thermal properties. The results are valid for that system defined in such a way. If any change is made by the supplier of the system which affects the principles of the therma
9、l proving, a new proving shall be carried out. EN 1264-5:2008 (E) 8 Annex A (normative) Figures and tables Y = Specific thermal output qH W/m2 X = Temperature difference between heating medium and room H K Figure A.1 Field of characteristic curves of a heating system EN 1264-5:2008 (E) 9 Y = Specifi
10、c thermal output qc W/m2 X = Temperature difference between room and cooling medium c K Figure A.2 Field of characteristic curves of a cooling system EN 1264-5:2008 (E) 10 Table A.1 Additional thermal transfer resistance Case of application W/(m2 K) R = 1/ - 1/10.8 m2K/W Floor heating 10.8 0.000 0 F
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- BS EN 1264-5-2008 内部水基表面加热和冷却系统.第5部分地板 天花板和墙内部加热和冷却表面.热输出的测定 1264 2008 内部 表面 热和 冷却系统 部分 地板 天花板 冷却 输出
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