Energy systems for an artificial cross-country skiing tunnel- With focus on snow quality and system boundaries

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/300559
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Type: Examensarbete för masterexamen
Title: Energy systems for an artificial cross-country skiing tunnel- With focus on snow quality and system boundaries
Authors: Fredheim, Sofie
Abstract: The system of an indoor skiing tunnel was first defined with a figure and than simplified in to three points; cooling, gains and losses for the surrounding air and lastly the amount of snow added to the system. Then the snow quality that was defined the best snow quality was snow at around 0.4 g/dm3. three study visits where done to get a better under standing of the operating and running of tree different tunnels in Gothenburg, Torsby and Gällö. From the study visits it was found that the tunnels were barely ventilated and that air leakage was the biggest contributer to the heating of the tunnels. Then the seasonal climate was defined. And the duration of hours that the different conditions lasted every year in the mollierchart. FromthisItwasfoundthatthattheheatlossduetoanairleakageof 1 m/s2 the heat gain to the system is approximately 24000 kWh/year. With this it was found that the energy needed to replace the snow in the different skiing tunnel was in the range between 120-145 MW. The conclusion drawn form this is that the this area need more research on the are of snow quality in indoor skiing tunnel and with conditions will make the snow to last longer. The skiing tunnels are a perfect place because of its controlled conditions to do this.
Keywords: Indoor skiing tunnel;snow quality;air conditions in Mollier
Issue Date: 2019
Publisher: Chalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE)
URI: https://hdl.handle.net/20.500.12380/300559
Collection:Examensarbeten för masterexamen // Master Theses



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