If it was a good as you say we dont see them in big quantity ?? here in Canada, water is a treasure, we have barrages and TURBINES, BUT we dont put tons of wheels in waters etc ...
If it was a good as you say we dont see them in big quantity ?? here in Canada, water is a treasure, we have barrages and TURBINES, BUT we dont put tons of wheels in waters etc ...
some do in small rivers if they are used for them and do make $ profit
some use solar power and have the powergrid systems, they receive invoice rebates thru the electricity provider
we have wind turbines, we have natural gaz
But no solution is better than the one, studies are made, locations are studied, people have their say, some projects where moved further away form civillians
here we have to protect wild life, sea life like whales etc ...
you dont hear how wind trubine clap on your head, and we hear them far away, they create energy, by they create incomfort too
and you barge here thinking hydro power is everything
They were all excited for tidal energy. There is place in Scotland that has a rather large one that does quite well but I wouldn't want to be in the water anywhere near it. I suspect it will devastate the fish but as with these things the bad news is kept out of the comments.Tidal power in inherently niche. Its possibly worth doing in a few select places, but it doesn't scale. Most of the world has only a small tidal range. If you live in a few places, like the UK and the surrounding countries, the continental shelf concentrates the water and you see tides big enough to do some decent generation. No continental shelf, no big tides. Most of the world would require vast areas of infrastructure to generate useful amounts of power from the tides.
Not entirely true. See https://withouthotair.com/c14/page_81.shtml and pages following.Where does MacKay differ from what I said? It was reading Without The Hot Air that first made me realise just how niche tidal power will always be. Before that I realised that Britain and France had taken the most interest in it, because of the continental shelf, but I didn't realise just how unusual that is. After reading MacKay and looking at some maps it became clear. If you live on the coast where there is no continental shelf, things like the tide going in and out on beaches is quite a weak effect.
They were all excited for tidal energy. There is place in Scotland that has a rather large one that does quite well but I wouldn't want to be in the water anywhere near it. I suspect it will devastate the fish but as with these things the bad news is kept out of the comments.Tidal power in inherently niche. Its possibly worth doing in a few select places, but it doesn't scale. Most of the world has only a small tidal range. If you live in a few places, like the UK and the surrounding countries, the continental shelf concentrates the water and you see tides big enough to do some decent generation. No continental shelf, no big tides. Most of the world would require vast areas of infrastructure to generate useful amounts of power from the tides.
Not entirely true. See https://withouthotair.com/c14/page_81.shtml and pages following.Where does MacKay differ from what I said? It was reading Without The Hot Air that first made me realise just how niche tidal power will always be. Before that I realised that Britain and France had taken the most interest in it, because of the continental shelf, but I didn't realise just how unusual that is. After reading MacKay and looking at some maps it became clear. If you live on the coast where there is no continental shelf, things like the tide going in and out on beaches is quite a weak effect.
You don't need a large tidal range. A large tidal flow is sufficient, e.g. off the Orkney coast.
They were all excited for tidal energy. There is place in Scotland that has a rather large one that does quite well but I wouldn't want to be in the water anywhere near it. I suspect it will devastate the fish but as with these things the bad news is kept out of the comments.Tidal power in inherently niche. Its possibly worth doing in a few select places, but it doesn't scale. Most of the world has only a small tidal range. If you live in a few places, like the UK and the surrounding countries, the continental shelf concentrates the water and you see tides big enough to do some decent generation. No continental shelf, no big tides. Most of the world would require vast areas of infrastructure to generate useful amounts of power from the tides.
Not entirely true. See https://withouthotair.com/c14/page_81.shtml and pages following.Where does MacKay differ from what I said? It was reading Without The Hot Air that first made me realise just how niche tidal power will always be. Before that I realised that Britain and France had taken the most interest in it, because of the continental shelf, but I didn't realise just how unusual that is. After reading MacKay and looking at some maps it became clear. If you live on the coast where there is no continental shelf, things like the tide going in and out on beaches is quite a weak effect.
You don't need a large tidal range. A large tidal flow is sufficient, e.g. off the Orkney coast.That's a continental shelf effect. Without the shelf the flow wouldn't be very strong. I think MacKay actually talks about the Orkneys. Might have been someone else's analysis I read.
They were all excited for tidal energy. There is place in Scotland that has a rather large one that does quite well but I wouldn't want to be in the water anywhere near it. I suspect it will devastate the fish but as with these things the bad news is kept out of the comments.Tidal power in inherently niche. Its possibly worth doing in a few select places, but it doesn't scale. Most of the world has only a small tidal range. If you live in a few places, like the UK and the surrounding countries, the continental shelf concentrates the water and you see tides big enough to do some decent generation. No continental shelf, no big tides. Most of the world would require vast areas of infrastructure to generate useful amounts of power from the tides.
Not entirely true. See https://withouthotair.com/c14/page_81.shtml and pages following.Where does MacKay differ from what I said? It was reading Without The Hot Air that first made me realise just how niche tidal power will always be. Before that I realised that Britain and France had taken the most interest in it, because of the continental shelf, but I didn't realise just how unusual that is. After reading MacKay and looking at some maps it became clear. If you live on the coast where there is no continental shelf, things like the tide going in and out on beaches is quite a weak effect.
You don't need a large tidal range. A large tidal flow is sufficient, e.g. off the Orkney coast.That's a continental shelf effect. Without the shelf the flow wouldn't be very strong. I think MacKay actually talks about the Orkneys. Might have been someone else's analysis I read.
It is not a "continental shelf effect" in any meaningful sense of those words. If it was, then all the light blue areas would be usable.
The key requirement is a large flow though a constriction, e.g. the Pentland Firth.
The terminology "continental shelf effect" is more commonly associated with distant undersea earthquakes and the magnification of a relatively small water displacement into a tsunami. Not really the same effect as gravitational ocean tides.
The Great Laxey Wheel (Queeyl Vooar Laksey) is the largest surviving working wheel of its kind in the world. Designed by the Victorian engineer, Robert Casement, the wheel was built in 1854 to pump water from Glen Mooar part of the ‘Great Laxey Mines’ industrial complex.
The impressive 22m (72.5 feet) diameter structure found immediate popularity and has remained one of the Island’s most dramatic tourist attractions for over 150 years.
The terminology "continental shelf effect" is more commonly associated with distant undersea earthquakes and the magnification of a relatively small water displacement into a tsunami. Not really the same effect as gravitational ocean tides.Its exactly the same thing. Whether the water is disturbed by the moon or an earthquake, you still get the same multiplier effect when that water meets a shallow ocean bed.
The terminology "continental shelf effect" is more commonly associated with distant undersea earthquakes and the magnification of a relatively small water displacement into a tsunami. Not really the same effect as gravitational ocean tides.Its exactly the same thing. Whether the water is disturbed by the moon or an earthquake, you still get the same multiplier effect when that water meets a shallow ocean bed.If that were the case, tidal power wouldn't be limited to specific geographical locations, and you could build an artificial tidal power basin anywhere in the world.
It's more economical to build a few big dams than lots of small water wheels. But it's possible the water wheels would make a comeback where the disadvantages of a dam are problematic.
A friend of mine lives in a new-build estate that has a water wheel along a major river. The water wheel generates a peak of 200kW.
Yes, it looks like we're rediscovering old tech thinking this is gonna be a breakthrough.
A 200 kW water wheel? Where can I see it? What are the dimensions? I find it difficult to believe.