 Poster: A snowHead
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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Just need the -50 temp I'd guess.....
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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You need to Login to know who's really who.
You need to Login to know who's really who.
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@achilles, the point about why the water feed does not freeze is well made, maybe it is the speed of the water, but that will only last for so long. I guess they must use additives in the mountains to stop the lines from freezing. It is a nice scientific demo for educating kids about phase changes though.
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Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
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That naughty achilles person.
Please continue to click through Facebook. Help out a silly scribbler who just wants to poodle about, popping up ski news-nuggets, without all the hassle of 'servers' and 'software' and this and that.
That nice Mr Zuckerberg makes it so easy!
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You'll need to Register first of course.
You'll need to Register first of course.
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A continuous feed of water is probably enough to stop it freezing. Have a think about how much colder it needs to be for flowing water to freeze compared to still water, and that has lots of extra heat loss through convection on the surface. I suspect if you turned that thing off, waited for a minute and tried to turn it back on it would have frozen up nicely though.
Snow cannons probably don't have anti-freezing additives in the water they use, cos it would make it harder for them to actually generate snow! Some places have additives to make it easier for the water to freeze, like silver iodine or ice-nucleating proteins. I guess they'd have to slurp all the water back out of the cannons to stop them freezing when not in use, though.
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@Serriadh, it was the additives in the water cannon water that had me a bit baffled, I also thought that they were included to lower the freezing temperature, but surely this would make the canons more prone to freezing, I wonder if they add something that only reacts to lower the freezing point when it contacts volumes of oxygen in the open air or something like that.
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You'll get to see more forums and be part of the best ski club on the net.
You'll get to see more forums and be part of the best ski club on the net.
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Great stuff, or should I start quizzing and asking boring questions to be a real snow head? will it work in France? if it won't then well its no good, because everyone skis france.
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Happily avoided FaceTwat to watch that one. Sorry, CG.
Out of interest, are we sure that was making snow? Strange question I know, but I couldn't see any accumulation, nothing appeared to reach the ground, and the blurb said they were using hot water. I wonder whether, if the air was v dry, all the hot water was just turning to vapour and evaporating. That's sort of what it looked like in the video too.
I tried to make snow using a pressure washer in temps of -13c, but it didn't work.
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snowHeads are a friendly bunch.
snowHeads are a friendly bunch.
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The only way we're going to find out is to all pack a jet wash and a lawn sprinkler in with our skis and inform various official types that it's "sporting goods" if challenged.
Wonder if we'll see the same person who tries to board a plane wearing ski boots trying to pass off their Karcher* as carry-on luggage?
(*other brands of pressure washer are available)
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And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
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@Megamum, additives are used to raise the freezing point. You want to make it easier to make snow, not harder.
Oh, and generally, you want to make ice, not flakes.
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FAQ
