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Energy intensity of artificial snow production
Křepela, Radim ; Fiedler, Jan (referee) ; Pospíšil, Jiří (advisor)
The presented diploma thesis informs about the origin, history, and benefits of technical snowmaking. It introduces what snow equipment consists of and what processes artificial snow is produced. It also shows the price of tons of snow produced from individual commercially available equipment. In the experimental part, the work deals with the calculation of droplet freezing for various input parameters of water, environment, and equipment. A sample calculation was performed for a falling water droplet from a snow lances. The droplet of discharged water was 0.3 mm in size and had a temperature of 2 ° C. The temperature of the environment was chosen to be -10 ° C. Furthermore, the trajectory of the droplet from a snow gun was determined. In the design, a specific snow pole was designed for the specified parameters, including the speed of the environment. The results were then compared with snow poles available on the market.
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Energy intensity of artificial snow production
Křepela, Radim ; Fiedler, Jan (referee) ; Pospíšil, Jiří (advisor)
The presented diploma thesis informs about the origin, history, and benefits of technical snowmaking. It introduces what snow equipment consists of and what processes artificial snow is produced. It also shows the price of tons of snow produced from individual commercially available equipment. In the experimental part, the work deals with the calculation of droplet freezing for various input parameters of water, environment, and equipment. A sample calculation was performed for a falling water droplet from a snow lances. The droplet of discharged water was 0.3 mm in size and had a temperature of 2 ° C. The temperature of the environment was chosen to be -10 ° C. Furthermore, the trajectory of the droplet from a snow gun was determined. In the design, a specific snow pole was designed for the specified parameters, including the speed of the environment. The results were then compared with snow poles available on the market.
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The impact of artificial snow production on the runoff balance in mountain basins
Murdychová, Pavlína ; Jeníček, Michal (advisor) ; Kučerová, Dana (referee)
This bachelor thesis handles issue of impact of artificial snow production on the runoff balance in mountain basins. First part of the thesis is summary of available literature about properties of artificial snow and its impact on natural sphere with regard to climate change. The second part of this thesis analyzed the change of water balance and runoff in selected basins in Krkonoše mountains. Data from monthly flows from three hydrological station - Vestřev (Labe), Horní Staré Město (Úpa), Dolní Sytová (Jizera) from 2003 to 2011 and data abstraction of water for snowmaking for the period 2001-2011 were used. The artificial snowmaking does not occure in long term to significant change in flow out, only to change their annual distribution. The impact of artificial snow production would be significant with evidence in a small basins. Keywords: artificial snow, snowmaking, water balance
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Analýza environmentální situace lyžařských sjezdových areálů ve vybraném chráněném území
Rejchrt, Pavel
This thesis titled The analysis of the environmental situation of the downhill ski centres in the chosen protected area is aimed at identification of downhill skiing centres in the Protected landscape area (PLA) Orlické hory and evaluation of environmental impacts of their operation. For this purpose, I firstly defined potential impacts of skiing centres on the environment and society. Afterwards, I characterized the region of Protected landscape area Orlické hory putting emphasis on natural conditions and touristic utilization of the territory. Subsequently, I described particular skiing centres and pointed out the high-risk environmental factors. The evaluation shows, that the strongest environmental impacts in the area are caused by production of artificial snow, sound system installation, or noise in general and lighting during night skiing. Further impacts are caused by additional activities in the centres. With the skiing centres is also connected development of tourism in the PLA Orlické hory, which has impacts on the environment as well.
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Comparison of vegetation on ski slopes with artificial or natural snow in CHKO Bílé Karpaty and CHKO Beskydy
KOCKOVÁ, Jitka
Vegetation cover of 24 ski slopes both with artificial and natural snow was studied; on each slope 5 phytocenological relevés measuring 4 x 4 metres were taken. A method of direct gradient analysis (RDA) was used to detect differences in composition of phytocenological reléves on the ski slopes with natural or artificial snow. However, no impact of use of artificial snow on vegetation was identified. During the winter season of 2009 and of 2010 samples of artificial and natural snow were taken for chemical analyses. The chemical composition differed significantly; artificial snow contained more NO3-, SO42- and Ca2+ ions and its pH was more alkaline in comparison with natural snow.
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Comparison of vegetation on ski slopes with artificial or natural snow in CHKO Bílé Karpaty and CHKO Beskydy
KOCKOVÁ, Jitka
Vegetation cover of 24 ski slopes both with artificial and natural snow was studied; on each slope 5 phytocenological relevés measuring 4 x 4 metres were taken. A method of direct gradient analysis (RDA) was used to detect differences in composition of phytocenological reléves on the ski slopes with natural or artificial snow. However, no impact of use of artificial snow on vegetation was identified. During the winter season of 2009 and of 2010 samples of artificial and natural snow were taken for chemical analyses. The chemical composition differed significantly; artificial snow contained more NO3-, SO42- and Ca2+ ions and its pH was more alkaline in comparison with natural snow.
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