Silent Rooftop Wind Turbines Could Generate Half Of A Household’s Energy Needs…

Silent Rooftop Wind Turbines Could Generate Half Of A Household’s Energy Needs...

Small wind turbines scaled to the right size for residential and urban areas have so far lived in the shadows of their larger wind-farm-sized counterparts. The power output has been too low for a reasonable return on investment through energy savings and the noise they produce is louder than most homeowners can deal with…

Silent Rooftop Wind Turbines Could Generate Half Of A Household’s Energy Needs...

A Dutch renewable energy start-up called The Archimedes is working to solve both of those problems in a new class of small-scale wind turbine — one that is almost silent and is far more efficient at converting wind into energy. The company states that the Liam F1 turbine could generate 1,500 kWh of energy per year at wind speeds of 5m/s, enough to cover half of an average household’s energy use.



When used in combination with rooftop solar panels, a house could run off grid. “When there is wind you use the energy produced by the wind turbine; when the sun is shining you use the solar cells to produce the energy,” The Archimedes CEO Richard Ruijtenbeek said

Silent Rooftop Wind Turbines Could Generate Half Of A Household’s Energy Needs...

The Liam’s blades are shaped like a Nautilus shell. The design allows it to point into the wind to capture the most amount of energy, while also producing very little sound. The inventor of the turbine Marinus Mieremet says that the power output is 80 percent of the theoretical maximum energy that could be harnessed from the wind…

Silent Rooftop Wind Turbines Could Generate Half Of A Household’s Energy Needs...

“Generally speaking, there is a difference in pressure in front and behind of the rotor blades of a windmill. However, this is not the case with the Liam F1. The difference in pressure is created by the spatial figure in the spiral blade. This results in a much better performance. Even when the wind is blowing at an angle of 60 degrees into the rotor, it will start to spin. We do not require expensive software: because of its conical shape, the wind turbine yaws itself automatically into the optimal wind direction. Just like a wind vane. And because the wind turbine encounters minimal resistance, he is virtually silent,” said Mieremet.

The company is also working on even smaller wind turbine designs that could fit on LED lampposts to power them, on boats or in smaller bodies of water. You can watch a video about the history of the Liam turbine from invention to field tests below (Via TreeHugger)…

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(92) comments

This is another misleading article about the capabilities of the pictured turbine. The energy extracted from the wind depends upon the cross-section of the intercepted flow. Articles, such as this tend to be self-promotional, often to draw in investors who do not have the technical knowledge to critically analyze what is presented. Many people feel no shame in fooling people who believe that by investing in such things they are creating a better future for future generations.

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There’s no commentary just annoying music and very few facts apart from 200 Watts near the end.

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I hope they keep perfecting ideas like this.

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Every house should have one possibly aided by grants to reduce individual household bills and national fossil fuel imports/dependence. Could easily be done if the political will was there.

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So, if you have two, would that generate all your household energy?

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    Would cover most things except big power surge stuff like kettles and large widescreen tv’s.

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Baxter Duane Cataylo Hernandez, is this the one???

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Things like this are why I keep my FB account. Technology to help fuel the world.

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Only on a windy day

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Steve McLoughlin

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Kadir Cinar ne diyorsun böyle bir ?eye?

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Perfect where I live on the Northern Coast of Cornwall

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No they couldn’t
This particular turbine picture pops up from time to time with wild claims and unproven performance figures
In addition, multiple studies have shown that there is not enough good quality wind available in most urban environments to produce any significant power.

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Many of these rooftop turbine designs cannot be fitted to 1 1/2 storey houses like we have here.

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Has nobody heard of a battery and charge controller?

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boats have been using them for years!

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? Noise levels??

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This could be better than solar because it could work at night and the design looks like it would trap the slightest breeze.

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This thing keeps popping up despite the fact that it’s mostly rubbish. There is no credible performance data and, after years of publicity, it has not progressed beyond an early design concept.

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    Mike research it

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    Jeff, I have ,several times over the years, hence my comments. If you have more up to date info showing performance data I would love to see it.

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    Thank you Mark Thur, not for the link, but for showing how narrow minded an quick to pre-judge people are. “Probably Nuclear Junkies” !!!!!

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    Thank you Mark Thur, not for the link, but for showing how narrow minded an quick to pre-judge people are. “Probably Nuclear Junkies” !!!!!

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    That brochure has been around for a while now and they still haven’t fixed the basic engineering errors in it. And there is still no performance data available. It all appears to be fluff and nonsense.

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    It takes a pretty stiff breeze. If I’m reading the power data correctly, you get 27 watts/hr at a wind speed of 8 m/s (which converts to almost 18 miles/hour.) An accounting of energy inputs from manufacture (mining the materials, fabricating and shipping) vs the output over the life ot the system needs to be done before it can be considered sustainable.

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    What’s your take Kermit? I tried to access the company link through and got nothing.
    Sounds like a great idea, and I hope it’s viable.

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    Yeah, I tried too. It’s an interesting idea. There have been small-scale wind turbine attempts before, so we’ll see. We’ll also see what community zoning will do to accommodate these. I think PV is way ahead of them.

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I dont need the patent,,,,, if these were built inside high rise roof vents with lower to upper fins then they would run all the time . they would run when there is no wind.

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Esme Reynecke

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We could use two and BAM – the whole energy needs are generated

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Shane Aaron Abell
Sam Ewell
Ray Downing

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Birthe Nørregaard Hansen Stine Riemann

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Wow sounds like a winner to me need more innovation like this and get away from fossil fuels

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Proven not to work, payback time far too long and promised output never achueved. If you want ‘free’ energy, probably best to look to solar. Or spend the money on insulation and changing to LED lighting.

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“Could ” is the deciding word here….I think solar panels would beat this one hands down on cost and appearance….

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This would be a nice combination with solar.

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Marissa George..??

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Why do you persist in posting this rubbish. It didn’t work when you first published it, or the second, or third, or any other time. It’s a lame duck. It will never fly, never.

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    Specifics? You’re right, I’ve seen the post before. Why do you say it will “never fly”?

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    Clickbait garbage like most of ecocrap posts. The average house uses 10Kw/day. We use 20+. Pissing into the wind!

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    Tim Cooley the basic design is flawed and it will never approach the efficiency of multi-blade turbines like the 3-blade turbines currently in use. Now, the current turbines are also limited in their efficiency due to a number of factors so that this turbine will be even more limited.

    The website for the turbine has been around for a few years now and still has no performance data , only some vague statements about performance and, last time I looked, they were still trying to lure investors with unsubstantiated claims.

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This could be a nice combination with solar panels. People working to produce energy by different ways. The expensive component are the batteries which make the alternative systems difficult to adopt by household users in third world countries where there is shortage of electricity. There fore research should be done to invent or produce these storage components that are affordable for middle class people and they last longer.

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How about this one Charlotte ?

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I’ll take two, please.

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Neat idea. Europeans are moving rapidly to develop alternate sources of energy so they can leave the grid. Elan Musk recently stated and proved that 100 sq. miles of a solar field along with 1 sq. mile of battery field could POWER THE ENTIRE U.S. needs. At first that seems awfully large until you realize that an area 10 miles by 10 miles in a western desert is not a very large area of that one desert.

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    Yep! These things are catching on! I have read about these, and the prices are coming down…so cool!!

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want one please!

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Heard this for about 3 years now.. are you gonna publicly release them already?? probably not. Imagine the amount of money the energy companies would lose..

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I have a fairly small solar and wind system and it saves at least 50 -60% every month on my power bill.

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The one shown of 750mm. diameter produces 200 Watts. That my lighting sorted on windy day.

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Yogesh Divekar fyi………

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Silent because they don’t work.

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    How do you know they don’t work, Dale? Do you have one?

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    Simple aerodynamic equations, too much resistance is the main problem. Power (lift or motion) is achieved by making air flow faster over a surface causing movement by coefficient of drag, too much drag (resistance) causes air to flow around it not through it. To offer an example a parachute old design has a hole in the top allowing air to escape this makes it stable as it falls without that hole air would flow around it not through it causing it to fall out of control and too fast because a vortex will form above it actually forcing it down. I’ve seen many wind power designs that fail because they lack simple aerodynamic efficiency. I could offer more examples and I’ve designed windturbines which are extremely efficient. If you’ve ever sailed you might know that it takes one square meter of sail for one horsepower, the same is true for windmills.
    Though this might be able to recharge a cellphone in a few days.

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Actually pretty sound looking small , for an off grid house might be one of the answers. My question would be cost of putting one in and technical difficulties.

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There’s a lot of these gadgets on here but where would you get one. Haven’t found one yet and judging by my last power bill might have to get one if I want to eat.

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    I wouldn’t bother unless you can put it on a mast taller than all the buildings around you ( on your roof is probably illegal, and would likely damage the structure .) It also helps if you live somewhere with constant gales. Mawson Station in Antarctica is one of the windiest places on Earth and they still only get half their power from wind. In Denmark the capacity factor of onshore wind turbines is 24% – and most of them are much taller and more productive than a backyard turbine.

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    Too cold in Saskatchewan – bearings will freeze up

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    I guess I’d have to replace them with Saskatchewan bearings then.

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Looks to be a great idea, I may have to attend green energy expo too

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Marlo S. Johnston, rumor has it there’s wind in Oklahoma:

https://www.youtube.com/watch?v=ZbrnXl2gO_k

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