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Technology 2023

The Development Of The Snow Cannon

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The Development Of The Snow Cannon
The Development Of The Snow Cannon

Video: The Development Of The Snow Cannon

Video: The Development Of The Snow Cannon
Video: TechnoAlpin Research & Development - TR8 2023, May
Anonim

Due to global warming, it has been a long time since there have been snowy winters, so ski resorts in lower areas in particular have problems attracting enough tourists. Snow cannons can help, for example, which transform the green slopes into a white ski landscape. This makes little ecological sense , but winter tourism in the Alps alone brings in 13.3 billion euros in sales, which justifies the effort for the operators.

Artificial snow discovered by accident

The basic principle of artificial snow was discovered by chance in Canada in the late 1940s. A team of researchers actually wanted to investigate the icing of jet engines by spraying water in a wind tunnel at low temperatures. There was snow. The first compressed air snow cannon was developed in 1950 and patent applied for in 1954.

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Although there have been various processes for producing technical snow since the first snow cannons, the basic principle is similar to the natural formation of snow: in a cold air stream, so-called snow cores are formed , which form the center of the later snow crystal. Depending on the principle, this works at temperatures around freezing or by adding liquid nitrogen even at summer temperatures .

30 times denser than real snow

Technical snow differs significantly from natural snow. The density is up to 30 times higher and the ice crystals are only a third as large .

The approximately 19,000 snow cannons in Austria (as of 2013) use around six million liters of water and 260,000 MWh of electricity per hectare per hectare. Extrapolated, Europe's snow cannons consume as much energy as Heidelberg and as much water as Hamburg each year.

Fascinating numbers of the construction

A radio signal takes seconds from earth to the moon - and it travels at the speed of light, i.e. 299,792.458 km / s. The light from the sun takes a little over 8 minutes to reach Earth. Is the sun still there? You will know it in eight minutes
A radio signal takes seconds from earth to the moon - and it travels at the speed of light, i.e. 299,792.458 km / s. The light from the sun takes a little over 8 minutes to reach Earth. Is the sun still there? You will know it in eight minutes
Billions of active users have used a standardized communication protocol since 1992 and sent a total of 59 billion messages in 2012, which cost up to 99 cents at weddings, had 1/1000 of the data volume of a minute's conversation and were 160 characters long - the SMS
Billions of active users have used a standardized communication protocol since 1992 and sent a total of 59 billion messages in 2012, which cost up to 99 cents at weddings, had 1/1000 of the data volume of a minute's conversation and were 160 characters long - the SMS
Years ago, the Inter City Experimental was introduced. On November 26, 1985, he promptly set a world record of 317 km / h, which was exceeded in 1988 at 406.9 km / h. For 780 km from Hamburg to Munich, an ICE now takes 5.5 hours - an average of 142 km / h
Years ago, the Inter City Experimental was introduced. On November 26, 1985, he promptly set a world record of 317 km / h, which was exceeded in 1988 at 406.9 km / h. For 780 km from Hamburg to Munich, an ICE now takes 5.5 hours - an average of 142 km / h
The German economy costs billions of euros the so-called undisclosed figure for data theft, industrial espionage and sabotage. 4.7 million cases of cyber crime take place annually. 0.3% of this was made known to the authorities
The German economy costs billions of euros the so-called undisclosed figure for data theft, industrial espionage and sabotage. 4.7 million cases of cyber crime take place annually. 0.3% of this was made known to the authorities

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