LED Street Lightingin Osnabrück

Andreas Hänel Planetarium, Museum am Schölerberg, Osnabrück

Marcel Haselof, Stadtwerke Osnabrück

Osnabrück October 2011

LED lighting • rapid increase of efficiency of white light LEDs

• long lifetime

• compactness

• dimmable/switchable

• sturdy

• more light at lower temp.

• low light pollution?

• still lower efficiency (NAV)

• expensive

• thermal management

• colour renditionTRIDONIC.ATCO

LEDs are getting more efficient, but warm < cool

DOE

4

Light colour, Man and Vision

Protected spectral range for visual astronomy(Falchi et al. 2011)

LED

Technical masterplan illumination

Richthofenweg Immelmannstraße

residential area

Pssssst!

conventional lighting

compact fluorescent

Hess Sera

• 34 W

• 2400 lm

• 5600 K

• 80 lx (brightest part)

iGuzzini Delphi

• 39 W

• lm

• 4000 K

Indal Stela

• 21 W

• 91...120...240 lm

• 4000 K

• 30 lx

Philips City Spirit LED

• 29 W

• 1400 lm

• 3000 K

• 13 lx

Trilux 9354 LED

• 24 W

• 2400 lm

• neutral white (4000 K?) daylight white (5500 K?)

• 43 lx

Hella Eco Streetline

• 45 W

• 2900 lm

• 6300 K

• 25 lx

Richthofenweg Immelmannstraße

VAT Energies Westerkappeln

Automous, photovoltaic, Savonius rotor

no power lines!

installation in Yorktown, IN

23 lx, 3500 K

17

Spectral sensitivity

Innolumis (Lemnis/Imtech)?

Mixture of red (630 nm) - green (500 nm)

Enschede/Hengelo

spectral sensitivity

Innolumis (Lemnis/Imtech) solution?

mixture of red (630 nm) - green (500nm)

Lemnis

“Auto lightmeter“

Auto - car - automatic