Electric Lighting Design Lighting Technology
DIALUX
Download luminaires from all connected manufacturers E.g. Philips www.lighting.philips.com/nl _nl/tools_downloads/
Luminaire choice Choice of 1 or more luminaries
Luminaire position
Luminaire position
Evaluation
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
Installed power Higher power > longer lamp! TL5 diameter 16 mm HE lumen HO lumen 14 W 1200 24 W 1750 21 W 1900 39 W 3100 28 W 2600 54 W 4450 35 W 3300 49 W 4300 80 W 6150 548 848 1148 1448 mm HE = High Efficient HO = High Output
Innovations in fluorescent lamps 1939: 38 mm (T12) 1995: 16 mm (T5) 1978: 26 mm (T8)
Luminous distribution CIE classification of intensity distribution Direct Semi-Direct Diffuus 0-10% 90-100% 10-40% 60-90% 40-60% 60-40% Direct-Indirect Semi-Indirect Indirect 40-60% 40-60% 60-90% 10-40% 90-100% 0-10%
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
Fotometric: C- γ system of coordinates C-planes γ-angles C0 - C180 plane C90 - C270 plane
Luminous distribution Polair diagram
Optics Polair diagram
Luminous distribution Polair diagram
Luminous distribution Polair diagram
optics (example Philips) D6 Double parabolic optic semi-glossy M2 Reflector frosted with ribbed louvres M6 Closed optic with frosted parabolid louvres
C61 D6
C61 M2
C61 M6
Example of luminaire information
http://www.etaplighting.com/products/productdetail.aspx?code=u1630/149hfw&cid=3&l=en
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
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
Illuminance One meter next to measurement point: cosα = (2 2 2 + 1 so α = 26.56 degrees Eh= I cos 3 α / h2 2 ) = 2 5 = 0,89 1 m C 0 E = 440 * 0.89 3 / 4 = 79 lux C 90
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
Different optic
Different optic
Different optic
Different optic
Emergency Light Emergency Light Replacement Lighting Evacuation Lighting Anti-Panic Lighting Exit Lighting Lighting for Work places with high hazard risk
Evacuation lighting Is switched on when the normal lighting fails due to power failure Provides that people can leave the building safely
Anti-panic lighting 0.5 lux Safely end activity Orientation Avoid obstacles to escape Exit without panic
Exit route lighting 1 lux Signaling - indicating the exit route Lighting of the exit route
Lighting for Work places with high hazard risk 10% Of normal lighting > 15 lx
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
Practice Electric Light Design
Class room in a school Size 7.2 * 7.2 * 3.6 m 3
Questions Which requirements Visual performance NEN EN 12464-1: 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?
Assignment Write down the light characteristics for electric lighting Design the electric lighting in your daylight design Bring this for next week for discussion