Lighting Technology Electric Lighting Wk5

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    Electric Lighting Design

    Lighting Technology

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    DIALUX

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    Download luminairesfrom all connectedmanufacturers

    E.g. Philips

    www.lighting.philips.com/nl_nl/tools_downloads/

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    Luminaire choice

    Choice of

    1 or moreluminaries

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    Luminaire position

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    Luminaire position

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    Evaluation

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    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

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    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

    HE = High Efficient

    HO = High Output

    548848

    1148

    1448 mm

    Installed power

    Higher power > longer lamp!

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    1939: 38 mm (T12)

    1978: 26 mm (T8)1995: 16 mm (T5)

    Innovations in fluorescent lamps

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    Direct Semi-Direct Diffuus

    Direct-Indirect Semi-Indirect Indirect

    0-10%

    90-100%

    10-40%

    60-90%

    40-60%

    60-40%

    40-60%

    40-60%

    60-90%

    10-40%

    90-100%

    0-10%

    Luminous distribution

    CIE classification of intensity distribution

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    Luminous distribution

    Fotometric: C- system of coordinates

    axis of rotation

    C=270

    =180

    axisoftilt

    C=0

    roadside

    kerbside

    C=90

    C=180

    =0

    =90

    C+20 plane

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    C0 - C180 plane C90 - C270 plane

    C-planes

    -angles

    Fotometric: C- system of coordinates

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    Luminous distribution

    Polair diagram

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    Optics

    Polair diagram

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    Luminous distribution

    Polair diagram

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    Luminous distribution

    Polair diagram

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    optics (example Philips)

    D6 Double parabolic optic semi-glossy

    M2 Reflector frosted with ribbed louvres

    M6 Closed optic with frosted parabolid louvres

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    C61D6

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    C61M2M2

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    C61M6M6

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    Example of luminaire information

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    http://www.etaplighting.com/products/productdetail.aspx?code=U1630/149HFW&cid=3&l=en

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    Point source calculation

    E = I cos () / d2

    or

    Eh= I cos3 / h2

    I = luminous intensity source in direction ofmeasurement point

    = angle between vertical and direction oflight source towards measurement point

    d = distance between light source measurement point

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    Luminaire 2 meters above table

    h = 2 = 0 => cos = 1

    Directly under luminaire:E = I cos3 / h2

    = 648 / 4 = 162 lux

    C 90

    C 0

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    Illuminance

    One meter next to measurementpoint:

    so = 26.56 degrees

    Eh= I cos3 / h2

    E = 440 * 0.893/ 4 = 79 luxC 90

    C 01 m

    89,052

    )12(

    2cos22

    ==

    +

    =

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    a) Determine Height H

    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

    hL=

    2,8m

    H = 1,55m

    hB = 1,25 m (Example)

    b=

    3,6m

    l = 5,4m

    b) Bepaling van de lengte en breedtewaarden (X,Y)

    Height HLuminaire heigth hL

    Position of viewer hB

    Determining UGR value

    UGR values in Dialux can befound in table

    Determine Roomparameters

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    Different optic

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    Different optic

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    Different optic

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    Different optic

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    Emergency Light

    Emergency Light

    Replacement Lighting Evacuation Lighting

    Anti-Panic Lighting Exit LightingLighting for Work places

    with high hazard risk

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    Evacuation lighting

    Is switched on when the normallighting fails due to power failure

    Provides that people can leave the

    building safely

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    Anti-panic lighting 0.5 lux

    Safely end activity

    Orientation

    Avoid obstacles to escape

    Exit without panic

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    Exit route lighting 1 lux

    Signaling - indicating the exit route

    Lighting of the exit route

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    Lighting for Work places with high hazard

    risk

    10% Of normal lighting

    > 15 lx

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    Schematisch overzichtAlso on the outside offinal exit

    Final exit

    Crossing, 1 lx

    Anti Panic lighting, 0.5 lx

    Exit

    Level difference, 1 lx

    Change of direction

    1 lx

    Fire extinguisher

    Exit lighting: 1lx

    Open zone: 0.5 lxElsewhere: 5 lx

    Exit route lighting

    1 lx

    Work places withhigh hazard risk: 10%

    of normal lighting.Min. 15 lx

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    Practice

    Electric Light Design

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    Class room in a school

    Size 7.2 * 7.2 * 3.6 m3

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    Questions

    Which requirements

    Visual performance

    NEN EN 12464-1:

    Classroom Em = 300 lx, UGRL =19, Ra =80.Remarks: Lighting should be controllable

    Black Board Em =500 lx, UGRL = 19, Ra = 80.Remarks: prevent specular reflections

    Atmosphere

    Shape

    Direct sunlight? -> orientation!

    View?

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    Assignment

    Write down the light characteristics for electriclighting

    Design the electric lighting in your daylight design

    Bring this for next week for discussion