Electric Lighting Design. Lighting Technology

Transcription

1 Electric Lighting Design Lighting Technology

2 DIALUX

3 Download luminaires from all connected manufacturers E.g. Philips _nl/tools_downloads/

4 Luminaire choice Choice of 1 or more luminaries

5 Luminaire position

6 Luminaire position

7 Evaluation

8 Design parameters Requirements: Illuminance Uniformity Luminance ratio Luminance Color rendering index Can be influenced by: Installed power Choice of optics Luminaire position/distribution Mounting height

9 Installed power Higher power > longer lamp! TL5 diameter 16 mm HE lumen HO lumen 14 W W W W W W W W W mm HE = High Efficient HO = High Output

10 Innovations in fluorescent lamps 1939: 38 mm (T12) 1995: 16 mm (T5) 1978: 26 mm (T8)

11 Luminous distribution CIE classification of intensity distribution Direct Semi-Direct Diffuus 0-10% % 10-40% 60-90% 40-60% 60-40% Direct-Indirect Semi-Indirect Indirect 40-60% 40-60% 60-90% 10-40% % 0-10%

12 Luminous distribution Fotometric: C- γ system of coordinates axis of rotation C = 90 C = 180 C = 0 γ = 180 axis of tilt γ γ = 90 γ = 0 C = 270 C + plane 20 roadside kerbside

13 Fotometric: C- γ system of coordinates C-planes γ-angles C0 - C180 plane C90 - C270 plane

14 Luminous distribution Polair diagram

15 Optics Polair diagram

16 Luminous distribution Polair diagram

17 Luminous distribution Polair diagram

18 optics (example Philips) D6 Double parabolic optic semi-glossy M2 Reflector frosted with ribbed louvres M6 Closed optic with frosted parabolid louvres

19 C61 D6

20 C61 M2

21 C61 M6

22 Example of luminaire information

23

24 Point source calculation E = I cos (α) / d 2 or E h = I cos 3 α / h 2 I = luminous intensity source in direction of measurement point α = angle between vertical and direction of light source towards measurement point d = distance between light source measurement point

25 Luminaire 2 meters above table h = 2 α = 0 => cosα= 1 Directly under luminaire: E = I cos 3 α / h 2 = 648 / 4 = 162 lux C 0 C 90

26 Illuminance One meter next to measurement point: cosα = ( so α = degrees Eh= I cos 3 α / h2 2 ) = 2 5 = 0,89 1 m C 0 E = 440 * / 4 = 79 lux C 90

27 Determining UGR value a) Determine Height H H = 1,55m h B = 1,25 m (Example) b) Bepaling van de lengte en breedte waarden (X,Y) h L = 2,8 m UGR values in Dialux can be found in table Determine Room parameters Height H Luminaire heigth h L l = 5,4m b = 3,6m Position of viewer h B X = Length l / Height H = 5,4 m / 1,55 m = 3,48 X between 2 H and 4 H Y = Width b / Heigth H = 3,6 m / 1,55 m = 2,3 Y between 2 H en 3 H

28 Different optic

29 Different optic

30 Different optic

31 Different optic

32 Emergency Light Emergency Light Replacement Lighting Evacuation Lighting Anti-Panic Lighting Exit Lighting Lighting for Work places with high hazard risk

33 Evacuation lighting Is switched on when the normal lighting fails due to power failure Provides that people can leave the building safely

34 Anti-panic lighting 0.5 lux Safely end activity Orientation Avoid obstacles to escape Exit without panic

35 Exit route lighting 1 lux Signaling - indicating the exit route Lighting of the exit route

36 Lighting for Work places with high hazard risk 10% Of normal lighting > 15 lx

37 Schematisch overzicht Also on the outside of final exit Fire extinguisher Exit lighting: 1lx Final exit Exit Open zone: 0.5 lx Elsewhere: 5 lx Crossing, 1 lx Level difference, 1 lx Change of direction 1 lx Anti Panic lighting, 0.5 lx Exit route lighting 1 lx Work places with high hazard risk: 10% of normal lighting. Min. 15 lx

38 Practice Electric Light Design

39 Class room in a school Size 7.2 * 7.2 * 3.6 m 3

40 Questions Which requirements Visual performance NEN EN : Classroom Em = 300 lx, UGR L = 19, Ra =80. Remarks: Lighting should be controllable Black Board Em =500 lx, UGR L = 19, Ra = 80. Remarks: prevent specular reflections Atmosphere Shape Direct sunlight? -> orientation! View?

41 Assignment Write down the light characteristics for electric lighting Design the electric lighting in your daylight design Bring this for next week for discussion