NOTICE: Large moosehead wall lights have finally been invented.
360 Modern is a real estate firm in the Pacific Northwest U.S. that specializes in modern homes. Beautiful stuff.
Handy way to skip all the intro crap on DVDs that is usually forced on you when you throw a disc in your player. Apparently the chapters on DVDs that you can't skip (FBI warnings, copyright stuff, etc.) are flagged, on the disc, as UOP, or User Operation Prohibited. This site lists some of the techniques you can try to skip the ennui.
This colour coordinated bookshelf looks cool, but you might have a hard time finding a particular title.
For chewie edge lovers or corner brownie fans - it's the Edge Brownie Pan. All edges, all the time. Via BoingBoing
Puzzle carpet.
This to That is a handy site that will tell you what adhesive to use when attempting to glue various objects together.
Super creative bathroom tiles.
Skinny house in Brazil.
Apparently there are many LED lightbulbs available already. Via TreeHugger
WiiRoomba. YouTube of a guy controlling his Roomba with a Wii remote.
Hardcore Lost fans have a party and repackage the snacks and beer as Dharma Initiative rations. Make your own with the PDFs that they've so generously shared.
Here's a nice set of home improvement videos with the energetic and snappy Eric Stromer.
Faucet Fountain turns your regular faucet into a drinking fountain.
Kids and the Home Office. Here's a list of tips for the parent that works from home.
Save the Internet.
Great Pac-Man bathroom tile work.
Crazy toaster from the future TODAY!
Here is a nice napkin folding howto site with clean pictures and straightforward instructions. I think the shirt's my favourite.
DIY T-Shirt Rack via Instructables.
360 Modern is a real estate firm in the Pacific Northwest U.S. that specializes in modern homes. Beautiful stuff.
Handy way to skip all the intro crap on DVDs that is usually forced on you when you throw a disc in your player. Apparently the chapters on DVDs that you can't skip (FBI warnings, copyright stuff, etc.) are flagged, on the disc, as UOP, or User Operation Prohibited. This site lists some of the techniques you can try to skip the ennui.
This colour coordinated bookshelf looks cool, but you might have a hard time finding a particular title.
For chewie edge lovers or corner brownie fans - it's the Edge Brownie Pan. All edges, all the time. Via BoingBoing
Puzzle carpet.
This to That is a handy site that will tell you what adhesive to use when attempting to glue various objects together.
Super creative bathroom tiles.
Skinny house in Brazil.
Apparently there are many LED lightbulbs available already. Via TreeHugger
WiiRoomba. YouTube of a guy controlling his Roomba with a Wii remote.
Hardcore Lost fans have a party and repackage the snacks and beer as Dharma Initiative rations. Make your own with the PDFs that they've so generously shared.
Here's a nice set of home improvement videos with the energetic and snappy Eric Stromer.
Faucet Fountain turns your regular faucet into a drinking fountain.
Kids and the Home Office. Here's a list of tips for the parent that works from home.
Save the Internet.
Great Pac-Man bathroom tile work.
Crazy toaster from the future TODAY!
Here is a nice napkin folding howto site with clean pictures and straightforward instructions. I think the shirt's my favourite.
DIY T-Shirt Rack via Instructables.
Update on the MagWind Levitated Vertical Wind Turbine
Wind energy expert Paul Gipe has posted his thoughts on the Mag-Wind Verticle Wind Turbine (previously).
Essentially, Paul deems this device everything but a dream:
Ok, let's take another approach. Mag-Wind says its wind turbine will produce 5 kW at a rated speed of 28 mph (12.5 m/s). To produce that much power at that wind speed it would need to be 281% efficient! Yee ha. That's some windmill. Modern wind turbines, at best, can deliver 40% of the energy in the wind at any specific wind speed. This turbine has a specific rotor loading of 3,360 W/m2 of rotor area. Let's compare that to the over rated AirX. The AirX is somewhat smaller so we won't compare actual production, just rotor loading. Remember, the AirX doesn't even deliver what is promised. The specific rotor load for the AirX is about 400 W/m2. The Mag-Wind claims to produce from its rotor almost ten times more power than the AirX which can't even meet its performance claims. Ouch. I've never seen such outlandish claims before-and I've seen a lot of them.
Link: Wind-Works.org
Via TreeHugger
Ok, let's take another approach. Mag-Wind says its wind turbine will produce 5 kW at a rated speed of 28 mph (12.5 m/s). To produce that much power at that wind speed it would need to be 281% efficient! Yee ha. That's some windmill. Modern wind turbines, at best, can deliver 40% of the energy in the wind at any specific wind speed. This turbine has a specific rotor loading of 3,360 W/m2 of rotor area. Let's compare that to the over rated AirX. The AirX is somewhat smaller so we won't compare actual production, just rotor loading. Remember, the AirX doesn't even deliver what is promised. The specific rotor load for the AirX is about 400 W/m2. The Mag-Wind claims to produce from its rotor almost ten times more power than the AirX which can't even meet its performance claims. Ouch. I've never seen such outlandish claims before-and I've seen a lot of them.
Link: Wind-Works.org
Via TreeHugger
Make Your Own Wind Generator
Instructables has a very thorough howto on building your own wind generator. According to the author, most of the materials can be found in junk piles or purchased at local hardware stores. The site lists parts and tools very well, but is, unfortunately, a little light on construction pictures. Nevertheless, this looks like a fun (and useful) project. The windmills can also be purchased from Vela Creations. Assembled or barebones parts-only kits are available here. From the site:
The Chispito Wind Generator is a 100W machine. It outputs 14volts at 280 rpm, so it starts putting power into your batteries in low wind speeds (7-10mph). It makes a perfect addition to an existing solar, or other alternative energy, home system. On its own, it will power lights, radio, and conservative use of appliances such as computer, satellite, blender, drill, etc.
It's interesting to see smaller companies attempting to build/improve wind power systems instead of waiting for some of the larger players in the industry to offer products at more affordable price points. Some of the offerings out there are more than a little pricey and would take many years to produce a postive ROI.
Via Digg
Categories: wind energy green efficiency howto diy electricity turbine
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MagWind Magnetically Levitated Vertical Wind Turbine
Update: please see this post for an update on the claims of this product. -Sean
If you can't tell by the picture, this is, of course, a "Magnetically-Levitated Axial Flux Alternator with Programmable Variable Coil Resistance, Vertical Axis Wind Turbine". It's called the Mag-Wind MW1100 and, thanks to some interesting technical maneuvering, promises 1100 kWh/month in a 13 mph average wind. The unit will cost around 3.5 cents/kW or, put another way, ROI will be reached in 3 years for someone with an average monthly electric bill of $300 - which sounds very high; a 6+ year ROI might be more realistic for home use. Nevertheless, the inventors claim the unit is cheaper than solar or horizontal wind turbines while requiring much less space to operate. The site's page on roof effect describes how the device can produce as much electricity as it does with such a small footprint:
So, how is it possible to make as much electricity as we do with only a 4-foot sweep? We use the roof of a house or other building to extend our reach and increase the volume of air reaching the sails of our VAWT. This gives us the effect of a larger surface area without actually having a larger vane. The great thing is that every house or other building also has a roof. The roof moves the wind, and that wind has a lot of energy.
The two major factors that determine how much energy is available are the vertical rise of the roof and the pitch, or angle, of the roof. The more rise there is, the more wind will hit it and be moved upward towards the VAWT. This is good. However, the steeper the roof is, the more wind energy will be lost in pressure against the roof and wind moving around the roof and the building as a whole. This is not so good.
A roof with a 10-foot vertical rise and a 30% angle will provide nearly a 200% increase in the amount of wind energy that is available to be turned into electricity. Compared to the same turbine just sitting on a pole, the roof effect increases the power yielded by operation of the wind turbine dramatically.
So, although it might be cost prohibitive for some (most), it might be worth looking into if you live in a fairly windy area, as the faster the average windspeed, the quicker it will be to see significant returns on your investment.
Via Greengeek.ca
Categories: magwind green electricity efficiency unique energy wind turbine
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13 Comments | Permalink |
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New Wind Power Design
Terra Moya Aqua Inc. has a prototype of a wind turbine that they claim harnesses 12-20% more wind power than propeller designs, doesn't kill birds and runs more quietly. The prototype has been in the works for 10 years, and is now ready for market, according to the company. From the site: Perhaps the most fascinating feature of this new design is the fact that it not only gathers energy from the push on the front side, but actually is pulled forward on the back side through a lift effect, similar to the principle that causes lift on a wing. "The back pressure creates a vortex that pulls it around, turning drag into lift," says Taylor.
The result is that the turbine spins just slightly faster than the wind speed -- 1/100ths faster on average, beginning with winds of about 5 miles per hour.
This facet is the "technology breakthrough" that makes it unique, according to Taylor.
Very cool.
Recent stuff from HouseHacker:
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