132 TECHNOLOGY / CASE STUDY
SLIPPIN’ AND SLIDIN’
The Königssee bobsleigh track regularly sees competitors in international competitions reach speeds of 120kph. New lighting from Norka is ensuring riders and spectators participate in the spectacle safely.
The bobsleigh, skeleton and luge track at Lake Königssee in Germany was the first artificial ice track in the world when it opened in 1960. With its 20 turns and over 1,700 metres of ice the track is viewed by many enthusiasts as one of the most challenging courses available.
The complex has recently been refurbished and fitted with a new cooling system, which was adapted to suit the track, with 32 kilometers of coolant piping running through the track’s thick concrete shell, following the three dimensional shape of the channel in terms of curvature, incline and height. These installation requirements are also applied to the lighting. A bright and glare free light was required to enable competitors to correctly access the course in every detail, as even a shadow can cause
a mistake.
TURKU amalgam luminaires from Norka ensure high illumination levels, which is camera suitable. The lights were installed along the ice track with an internal reflector emitting a concentrated wide beam, and a reflector tube made of clear PMMA.
In the straight sectors of the track, single- lamp TURKU versions with powerful 1 x 80 wattage amalgam lamps are used and in especially demanding and winding sections of the track, twin lamp versions with 2 x 80 wattage have been installed. Given the location and the plunging temperatures which often assail it, Norka has designed the units with this in mind. Featuring an IP65 protection rating the lighting will not be compromised due to
its operating conditions, neither cold, moisture or winter weather will affect their functionality. The luminaire’s reflector tubes are equipped with a special duplex cold protection system, lamps and the ballast chamber are thermally separated and the luminaire has cold resistant through wiring. Fluorescent lamps with amalgam technology achieve a greater amount of their maximum luminous flux over a larger temperature range, thus ensuring high system efficiency even at low temperatures. This is further increased by the use of energy efficient electronic ballasts, which guarantee the luminaire’s instant start at a very low ambient temperature.
www.norkalighting.com.au
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