If the only reason you’re worried about global warming is that it will mean a shorter ski season, you can go ahead and buy that petrol-guzzling would-be tank you’ve been eyeing. A new type of snow machine can churn out the white stuff when it’s as hot as 32 degrees outside, and it uses way less water in the process.
An Italian company called TechnoAlpin has developed a new kind of snow-making machine called the Snowfactory that can operate at temperatures well above -2 degrees Celsius, which is the upper limit for existing machines. The ideal temperature range for the machine is somewhere between -2 and 24 degrees. It can still operate in higher temperatures, but the snow won’t last as long.
The machine, which lives inside a giant insulated steel shipping container, uses large refrigerated cylinders to create ice crystals which are harvested by a conveyor belt that delivers them to ploughs or cannons for dispersion. The Snowfactory does use as much as five times more energy than a traditional snow machine, but much less water. It only needs upwards of 18 gallons of H2O every minute, compared to 100 gallons for older snow-making techniques.
Blanketing an entire ski resort in snow at the peak of summer using the Snowfactory is most likely an incredibly expensive venture since it would have to be kept running all day and night to stay ahead of it all melting. But it could allow resorts to extend their season by a month or so, or facilitate smaller events like trick competitions during the off-season. [TechnoAlpin via Outside Online]