Wind is a plentiful resource that will never run out no matter how much of it we humans manage to harness. It is clean and accessible in every country around the globe. So doesn’t it make sense to utilize such a natural force knowing that there is no adverse impact from your efforts!
Is A Gaia-Wind Small Wind Turbine Right For Me?
The majority of the world is considered to have “moderate” wind speeds. That equates to between 4m/s and 9m/s or an “average annual wind speed” of less than 7.5m/s. So it’s important when you chose your Wind Generator that you chose one that performs well in this wind speed range. The GW133 is such a machine and has offered class leading performance for its rated power and cost of deployment for over 25 years. This is mainly due to the large rotor diameter capturing more of the wind and harvesting the energy from it. When it comes to small wind turbines, bigger blades are better!
When chosing your Wind Generator you have to take into account the average annual wind speed for your site. There are many sources for this information and we at Gaia Wind will be only too happy to point you in the direction of accurate independent data. Once you’re satisfied that you have sufficient wind resource then you need to select the right technology for your site. There are many to choose from but the best way of comparing two small wind generators is to first look at the most obvious comparison – size. More specifically look at the size of the rotors. The technical term applied to the rotors is called the ‘swept area’, which literally means the size of the area ‘swept’ by the blades as they turn.
The bigger the rotor, the more wind it captures and therefore the more energy it generates. The relationship between swept area and output is linear, so (all other things being equal) if you double the swept area of a turbine you get double the output. The GW133 has a swept area of 133m2 while its main competitor’s is 63.6m2.Quite simply, the Gaia-Wind small wind generator has a much bigger swept area and produces more power as a result.
The Rated Power Myth
A few of Gaia Wind’s competitors have caught on to needing a bigger swept area to capture more energy from the wind. However, to do this they have had to increase the “rated power” of their equipment to disguise the significant increase in costs they need to match the GW133 performance.
Unfortunately, it has become common for wind generators to be compared by looking at their ‘rated power’ in kilowatts (kW). The problem with this is that many manufacturers rate their products at very high wind speeds (usually 12m/s or more). This means that the turbine will only produce its rated power when the wind is blowing very hard – which is not that often.
It makes a lot more sense to see how much power a wind generator will produce in the kind of wind speeds that are frequent in your location – in the range of 4 – 9m/s. Because these lower speeds are much more common, a wind generator that performs well in them will generate much more energy over the course of a year than one that performs best in the 10 – 15m/s range.
Also critical to performance is the height above the ground. Many small wind generators are supplied on a 15m tower, whereas as a GW133 is typically supplied on an 18m tower, where the energy in the wind is 10% higher.
Annual Energy Capture
So how much electricity could you expect a Gaia Wind Generator to produce each year against the competition? Lots of different factors influence energy production, but it is possible to estimate and make a rough comparison. Evidence has shown that on a site with an average wind speed of 4.3m/s at 10m height, a GW133 should outperform its nearest competitor by about 20%.Thats 20% more energy for you to realize income or utilize in your home, business, or community!
What can I do now?
You can make contact with us directly at [email protected] and we can guide you through the next steps. If that’s to conduct an initial Desk Top Survey or to arrange for us or our Partner to come and do a full Site Survey we will keep you right. Either way you will then have all the information you require to make an informed decision.
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HAWT, Horizontal Axis Wind Turbines from Gaia Wind, Their Advantages and Disadvantages Plus the Effects of Cyclic Stress and Vibration
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Case Study in Using a Small Wind Turbine From Gaia Wind to Make Your Home and Business Energy Self Sufficient
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