This is a video by Helix Wind of one of our independent, 3rd party validated performance tests. www.helixwind.com Thanks to Chad Benton for the music, to hear more of his work please visit www.awomansworkmovie.com
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There have been lots of attempts to create shielded VAWT but they lose most of the advantages of a VAWT. The shield has to have a yaw control, etc so you no longer capitalize on the variable wind direction. They do increase efficiency but at the cost of response time and CoGS.
Efficiency is only part of the equation. Capacity factor is the other important part. Most HAWTs are inherently more efficient than VAWTs, but when it comes to utilizing the available wind resource over the course of a year to generate electricity, they end up producing less b/c they have many operating limitations. The ONLY metric that really matters is $/kWhr generated. On that variable, for target applications for this technology, Helix is highly competitive.
Twoddle. ‘Shielded’ VAWTs or, to be more precise, those with ‘leading edge reorientation flap’ are showing much more efficiency, either in tunnels or outside, and by a huge %. Admittedly that % still being determined, and by only a tiny few, but what I cannot understand is why it takes so long in this IT age for the best to kill the rest. Human stubbornness one supposes. This helix thing is pretty, but pretty powerless and I suspect that the site is a hopeful advertisement. .
You could, many off grid applications are done this way, but most customers elect to have it connected to the grid and net their usage on an annual basis. If you are on a time of use meter then, depending on your rates, a battery system to peak shave can make sense.
It is one of the quietest wind turbines available because the tip speed of the blades is less than the wind speed. It is also much safer than typical turbines because it turns at lower rpms and doesn’t shed ice long distances but rather downward in a limited radius.
Battery systems for storage are a separate component and not included with the system, and the platform does have a brake so that if winds in excess of 150mph are anticipated it can be shut down.
This data varies by model and is available on the Product page on the website.
They could be, but the square footage and subsequent output you could devote to the solar panels wouldn’t be worth the cost.
A good question. First, a ducted VAWT only generates more output in wind tunnel tests, not in the real world where the wind changes direction, and if you consider the additional swept area created by the duct as part of the turbine, then you’re really not seeing an efficiency improvement, only a swept area increase. Second, the key challenge with the Savonious is to make it durable, efficient, reliable and cost effective. That’s where all the development $ has gone.
This is indeed the minimum speed required for it to start turning, however that’s not the same as to produce power. Most small wind manufacturers will issue confusing statistics which can be misleading to customers. Cut in speed does not equal starting production speed. You really need about 7m/s average annual wind speed for ANY small wind turbine to generate significant output.
That’s a great question, and the first one most people ask. Unfortunately, the answer is not so simple. The typical American home uses about 10,000 kWhr/yr. In a good Class 3 wind regime (7m/s average) the turbine in this video will output about 3,650 kWhr or about 36% of total household load. That being said, more wind, more power. Less usage by the home, a higher % supplied.
Annual energy output (AEO) at different wind speeds is available on the cut sheets for each model posted on the website. The test in the video above was under load and was used to determine initial efficiency. Subsequent to this extensive field testing was conducted to validate efficiency and output under real field conditions in a Class 7 wind regime in California. The AEO figures represent the confirmed output under real world conditions.
This requires some clarification. The concrete foundation can take from a few days to a month to fully set depending on the size. The actual assembly and installation of the turbine can be done in as little as 1/2 a day, 2 days maximum.
The Savonious platform is designed to withstand sustained winds up to 100mph and gusts up to 150mph, it’s one of the design characteristics that distinguishes it from most other platforms. Since the power in the wind is a cubic function, the ability to continue generating electricity at very high wind speeds during seasonal storms can generate enormous additional power on an annual basis. Most propeller style turbines have to shut down around 35 or 40mph.
Actually I’m looking at the company specs for the thing and it says “No braking for normal operation”
so I wonder if it’s heavily resistant to large wind gusts and breaking apart?
That’s truly amazing! I slashed my electric bill in half! look here: solar.xfollow.me (Copy to your browser’s address bar)
To be honest, one week is too long. Installing it within 5 hours would make sense.
Can you provide the dimensions of the wind turbine, power vs. wind speed data? I bet the efficiency shouldn’t be very high. Also, this kind of no load test means nothing except that the wind turbine can turn.
brilliant video how many houses would this size turbine power and what size would i need to power a typical house ,
For the S322, I see that the Cut-in Speed is 3.6 m/s (8 mph). Is this the minimum windspeed required for the turbine to start turning?
Why spend so much money on the development of a simple open Savonius (VAWT) when it’s already well established that a screened or ducted VAWT is considerably more efficient?
Could these be fitted with a flexible solar panel around them as to even further increase efficiency without sacrificing space?
dude that is so awesome.
How many watts does this shot out? and what min. speeds? 5 to 12 mph?
stores energy, i assume the turbine has some batteries in it
and it should have breakes so the thing doesn’t fly apart.