How do these people get away with this....it must be in contravention of advertising standards etc.
http://www.hojomotor.com/?hop=reri168
Gee thanks Jon, I just let everyone in our company know that we're all out of business! ;D
CraigBert — Dec 03, 2011Gee thanks Jon, I just let everyone in our company know that we're all out of business! ;D
I found this pile of crap by accident from a facebook link, but then I did some searching on youtube and there are thousands of idiots who actually believe this stuff. It just amazes me how that site gets away with charging for plans to make this device, and they state that they guarantee that it works. Where's the advertising standards agency....it's fraud for christ's sake (peace be upon him...oops, wrong one). Just amazing the amount of idiots who are convinced that they have found the answer that defies all the laws of physics within this hokum device. Do a search on youtube for "magnetic motor" and the amount of people wasting their time on this nonsense is incredible.
Now
THIS is a real motor! This is one of our "bullets" that we put together with a 48-pole permanent magnet generator (the black, cylinder at the bottom) and a gearbox (the blue area) in a mounting assembly. And this one's only a 129 kW size. The ones around 400 kW are 31"x31"x46" and weigh about 4,000 pounds! ;)
CraigBert — Dec 04, 2011Now THIS is a real motor! This is one of our "bullets" that we put together with a 48-pole permanent magnet generator (the black, cylinder at the bottom) and a gearbox (the blue area) in a mounting assembly. And this one's only a 129 kW size. The ones around 400 kW are 31"x31"x46" and weigh about 4,000 pounds! ;)
What is that motor to be used for ?
Jon — Dec 04, 2011[quote author=CraigBert link=1322926345/0#3 date=1322979774]Now THIS is a real motor! This is one of our "bullets" that we put together with a 48-pole permanent magnet generator (the black, cylinder at the bottom) and a gearbox (the blue area) in a mounting assembly. And this one's only a 129 kW size. The ones around 400 kW are 31"x31"x46" and weigh about 4,000 pounds! ;)
What is that motor to be used for ?
It went in
THIS.Right now, most of our projects are actually hydro or diesel gen-set types, but wind turbines are where we started. Our internal motto is "If you can generate it, we can convert it." :)
Impressive. Perhaps you can shed some light on a question that I've pondered upon for sometime now. In the UK there are lots of windfarms popping up in coastal areas and some even on the outskirts of the city of London. I find it somewhat confusing that even on a day with absolutely no wind at all, not even the slightest whisper in the tree-tops the inner city wind turbines are still turning. So, this makes me believe that they are actually powering the things to make them turn in order to stop them seizing up and if that is the case then there is no way they can ever even recover the cost of the thing in the first place, or are these things so sensitive that they will turn even if there isn't any wind ;)
they could be turning due to inertia from prior wind? like a flywheel effect.
or, the wind conditions at their "altitude" are different than ground level?
I don't know the answer - just two possibilities that come to mind.
The sheep's on the right track. They do leave them spinning to avoid having to overcome inertia (called "detent torque"). There are two reasons why you want to have a TALL turbine: The first is because the wind is significantly stronger just 50m higher and the second is less wind shear. Wind shear is actually the effect of friction from objects on the ground that not only slows wind down but causes unwanted turbulence.
I personally don't care much for the turbine you just saw in that video, it's too big and with too many parts to be very efficient. With a horizontal axis turbine like that one, if you double the size of the capture area you can only get twice as much power (2^1), however, with a normal vertical axis turbine, if you double the diameter of the blade you get four times the power (2^2). The largest impact though is when the flow (in this example, air) is doubled. When this happens you get EIGHT times the power (2^3). This is why you want to spend as much time as possible in the higher winds even if they only happen a much lower percentage of the overall time.
Hydro is where I get excited. In all of the power generation algorithms you have to take the mass of the flow into consideration and air is only around 1.225 kg/m^3 while water is about 1,000 - HUGE difference! :)
