CIE 40-1978 Calculations for Interior Lighting Basic Method (CIE 40 1-1996 Revision 1 (E))《室内照明用计算 基本方法CIE 40 1-1996 修改件1 (E)》.pdf
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1、)a PJ f ISBN 3 900 734 66 6 COMMISSION INTERNATIONALE DE LCLAIRAGE INTERNATIONAL COMMISSION ON ILLUMINATION INTERNATIONALE BELEUCHTUNGSKOMM ISSION CALC,ULATIONS FOR INTERIOR LIGHTING BASIC METHOD CIE 40 - 1978 CIE 40.1-1996 Revision 1 Unchanged technical content, English version with three-language
2、summary U DC: 535.24 628.97 Descriptor: Photometry Interior lighting CIE 40 78 I 9006345 OOOLb02 T57 W C.1.E. TECHNICAL COMMITPEE REPORT NOTE PRELIMINAIRE Ce rapport a t.prpar8 pat le C0mit.Technique CIE 1.5. 11 a t approuv par la majorit du Comit, dans lequel sont repcbscnts la plupart des Pays Mem
3、bres de la CIE t il cet recommand pour 1Ctude et lapplication. Ce rapport nest pas une Reconneandation Officielle de la CIE approuve par les Comits Nationaux des Pays Membres. I1 doit le plan utile est suppos matrialis par une paroi qui sera compte comme une des parois du local; les parois rflchisse
4、nt suivant la loi de Lambert et ont des facteurs de rflexion uniformes; le flux direct sur le plan utile ne varie pas dune faon significative suivant la direction des luminaires dans le plan horizontal. Voir galement la publication CIE 52, Calculations for Interior Lighting: Applied Method. ZUSAMMEN
5、FASSUNG Berechnungsverfahren fr Innenbeleuchtung: Basismethode Der vorliegende Bericht stellt eine Methode vor, die als Basis fiir Methoden in der Praxis dienen kann. Sie beschrnkt sich nicht auf standardisierte Lichtstrkeverteilungen und regelmige Leuchtenanordnung. Die Voraussetzungen fr die Anwen
6、dung der Basismethode sind die folgenden: der Raum wird vereinfacht gedacht als ein rechteckiges Parallelepiped; die Nutzebene wird als eine Raumbegrenzungsflche angenommen; die Raumbegrenzungsflchen reff ektieren nach dem Lambertschen Gesetz und mit gleichmf3igen Reflexionsgraden; der Direktlichtst
7、rom auf der Nutzebene ist nicht wesentlich verschieden fr Quer- und Lngsaufhngung. Siehe auch Publikation CIE 52, Calculations for Interior Lighting: Applied Method. CIE 40 i6 OOb345 OOOLbOb bT2 = -7- CRLCULATIONS MR INTERIOR LIGHTING BASIC METHOD 1. Introduction This report presents a basic method
8、which does not rely on standard light distributions for luminaires and is not restricted to regular ar- rangements of luminaires. The method is called a “basic method“ because it serves as a basis for applied methods. Another report is envisaged with standardised data to be used for applied methods.
9、 The method can be used in situations where : a. the interior is a rectangular parallelepiped i b. the working plane can be assumed to be materialized by a surface, that will be counted as one of the room surfaces ; c. the room surfaces reflect uniformly and according to L-amberts law, with reflecta
10、nces Ri of the ceiling, R2 of the frieze (defined as those parts of vertical surfaces which lie between the ceiling and the plane of the l*i- naires), R3 of the walls (defined as those parts of vertical surfaces which lie between the plane of the luminaires and the working plane) and R4 of the worki
11、ng plane (s), and d. the direct flux on the working plane does not vary significantly if the luminaires are rotated about their vertical axis (*d. 2. Direct flux on the working plane P4 In order to determine the direct flux on the working plane, it is assumed that the flux emitted by the luminaires
12、in a cone having as its axis the (vertical) 60, O i 75, 5 ; 90, O degrees. (x5dThis is the case for most fluorescent luminaires. In the case of obvious (*xx)The limiting half-angle values for these four zones are : . ._ Previous page is blank . ._ . . CIE 40 78 9006345 0003607 539 -8- method, these
13、four zonal fluxes FC1, FC2, FC3 and FC4 (iL) characterize the doisnward light distribution, F being the total light output of the luminaire (upward and downward) . In these conditions .the flux (fu) received on a rectangle from a symme- trical pointsource located vertically above a corner of the rec
14、tangle, is a linear function of the fluxes, FC1, FC2, FC3, FC4. The weighting factors al, GM2, GM3, mi4 (u) are themselves functions of the ratios X/H and Y/R of each of the sides of the rectangle to the sus- pension height H (fig. i). These factors multiplied by loo0 are given in tables 1.1 - 1.6.
15、Example : If X 5 2,25 m, Y = 3,30 m and I = 1,s m : X/H .+ 1,s and Y/ = 2,2. From table 1.4 follows : These values are given in thousandths, so that M1 = -12 : GM2 = 218 i GM3 = 47 ; GM4 = -4. fu = ( -12 FCl + 218 FC2 + 47 FC3 - 4 FC4 ) / loo0 By applying the operations escribed above four times, on
16、e can obtain, for a given installation in the room, the direct flux (Fu) received on the working plane from a given lunaire. Pu 0 CGMl.FC1 + CcM2.FC2 + CW.FC3 +CGM4.FC4 Example : For a room (-*I with A = 3 m, B = 4,s m and X = 185 m a ceiling mounte luminaire is located at a distance X = 2,25 m from
17、 the long wall and at a distance Y = 3,30 m froin the short wall. The pairs (x/ i Y/) *a* to be considered for the four rectangles are 8 . (1,5 ; 2121, (0,s 1 2,218 (0,8 8 1,s) t (0,s 8 018). Consulting tables 1.4, 1.2. 1.2 and 1.1 : (*I FC : cumulated flux (-1 GM : geometric multiplier kk*I “A is a
18、ssumed to be the smaller and B the longer side. (*il In view of the arrangement of Tables 1.1 - 1.6 the pairs are given with the smallest value as the first. -. . I -. .I . . CIE 40 78 900bL45 000Lb08 475 -9- X/H Y/n GM 1 GM2 GM3 GM4 1.5 2.2 -12 218 47 -4 0.5 2.2 189 -4 36 -6 0.8 1.5 147 117 -13 2 0
19、.5 0.8 267 - 78 -31 -5 - - ,- - C Mln591 Z GM2=253 L GM3= 101 Z GM4=13 from which follows : Fu = (591FC1 + 253FC2 + 101FC3 - 13FC4) / IO00 The direct flu F4 is the sum of the fluxes thus obtained for each luminaire of the installation. 3. Interflections The interflections are calculated assuming tha
20、t the total illuminance (direct illuminance increased by ref lectc? illuminance) is distributed uniformly respectively on the wholc eciljng-frieze, on the walls and on the working plane. O In these conditions and for the usual dimensions of interiors thennitual- reflections only depend in practice o
21、n the relationship of the suspension factor J of the luminaires and the room index K defined by (fig. 2) : H2 AxB J= K- 2 + i13 83 (A + B) A and B being the sides of the room, 113 the istance between the plane of . the luminaires and te working plane, ana R2 the height of the frieze (distance betwee
22、n the ceiling and the plane of the luminaires). 4. calculation of Illuminances If (NM) is the number of luminaires in the room, F is the total light output of a luminaire FC4 is the downward flux of one luminaire, F4 is the flux which is directly incident on the A and B are the sides of the room. (u
23、pward and downward), working plane from all the luminaires and The mean illuminances El on the ceiling, E3 on the walls and E4 on the working plane are calculated by means of the following linear functions of F, FC4, F4 : E1 RM11. (NM).F/AB + RM12. (NM).FC4/AB + RM13.F4/AB E3 * RM31. (NM).F/AB + RM3
24、2, (NM).FCQ/AB + RM33.F4/AB E4 = RM41. (NM) .F/AB + RM42. (NM) .FC4/AB + RM43.F4/AB The weighting factors R (e) are given in tables fI.l to 11-24 (u) k)RM : fnterflections ( in first column number 8873 mean K - 0,6 and 1, 3, R4 = 873 consulting table 11.1 first line (LI RMl1 = 1,255 RM12 = -0,889 RM
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