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Fläkt Woods AS, Norway
Global Communications Manager
Fläkt Woods Group
+46 36 193 330
World Premiere! For the first time in world history comes brash ice (slush) directly in the run-up.
Fläkt Woods is literally in the run-up. The installed equipment represents a new method for producing ice to the ski jumping hill.
Fläkt Woods has developed a completely new method of preparing the ski track surface for the world famous ski jumps at Holmenkollen, in the hills above Oslo.
The Holmenkollen ski jump is Norway's most popular attraction for travellers. Holmenkollen hosts FIS World Cup ski competitions each year and the construction of the new €154 million Holmenkollen and Midtstubakken ski jumps was completed in time for the preliminaries of the Nordic World Champions in 2011, which occur in March 2010.
Fläkt Woods’ new concept is based on a process of parallel glycol filled channels in the track run-up, that are covered by snow and slush, a brash ice, which is then poured out to form a hard snow surface. The track can easily be re-frozen once it becomes worn.
The Company has supplied the equipment to produce the slush. As John Eilertsen of Fläkt Woods, explains, ”We have provided a slush machine on the snow jumping hill, manufactured in Canada by Ice Gen. Fläkt Woods and IDE Technologies are also responsible for the production of dry snow and ice, so no matter what the outside temperature is, snow is always guaranteed. In addition, surplus heat can be used for heating the water for outdoor pools and bathrooms”.
The technology behind the ice slurry generator is formidable. Fabricated from stainless steel and consisting of stacked flat plate heat exchangers, it incorporates a rotary scraper that harvests the micro ice crystals as they form on the heat transfer surface. It is designed to operate at a saturated suction temperature of -11oC which offers considerable energy savings, with a capacity from 2 to 120 tons of ice per day from a single system.
Both ski slopes had previously produced artificial snow which was transported up and distributed onto the track. This was a time consuming and hard job. Now, Fläkt Woods’ installations are providing the slush to the ski jump, using the machines as well as supplying the cooling for freezing the tracks. The slush is then pumped out at various points to get an even distribution.
As IDE Technologies’ Lennart Brudin explains the use of dry snow and ice has been used in Switzerland and Austria to extend the ski season considerably, with substantial increase in operating incomes. A study is also underway to look at the possibilities the technology can create in Östersund, the international ski centre in Sweden.
The new Holmenkollen ski jump has facilities for as many as 60,000 spectators. The 120-meter jump has been built in eight sections, and a chairlift will ferry jumpers to the top, meaning they no longer will have to climb stairs as they did at the old Holmenkollen. The neighbouring Midtstubakken jump, for jumping up to 95 meters, has been constructed just below Holmenkollen, along with new ski trails, a biathlon arena and support facilities from the royal box to judging and press quarters.
”It's nice that Fläkt Woods has received an opportunity to be part of the significant Holmenkollen project. For me it is of particular interest and it’s very nice to be involved in helping the ski jumping sport. This is both fun and challenging” concludes Eilertsen.