Ampair, the Dorset-based wind turbine manufacturer, is pleased to announce that it is in exclusive negotiations to acquire Westwind, the Belfast-based wind turbine manufacturer. Ampair, with over 40-years’ experience, is the UK’s oldest manufacturer of wind turbines. Westwind relocated from Australia to the UK several years ago and now offers the widest range of MCS certified turbines of any manufacturer.
Ampair’s managing director David Sharman said “this acquisition immediately enables us to offer a wind turbine solution from 100W through to 20kW, which is a unique position and which will be to the benefit of our worldwide client base. Ampair’s smaller turbines and Westwind’s larger MCS-certified turbines neatly span the full range”. Andrew Graham, managing director of Westwind said “This is an important step for both companies. We have long been impressed by Ampair and it became clear that they were the natural partner for us with their strong engineering and worldwide sales”.
Staff of both companies have been kept informed and operations will continue at both sites. This announcement is being made so that suppliers and customers can be kept informed. With immediate effect Ampair/Westwind turbines are available; from the smallest 100W-600W units for powering scientific equipment and yachts, through 5kW and 10kW turbines for householders, to the larger 20kW turbines of interest to farmers, small businesses, telecoms applications and off-grid communities.
For more information contact email@example.com or visit www.ampair.com
The MCS approved list of small wind turbines includes 31 models, but none of them are vertical axis any more.
Quiet Revolution QR5, the darling of the architects, is no longer listed there. Instead the company have quietly shifted to marketing a chinese machine, the Hy5
A news story about the quiet revolution turbine “£48k wind turbine creates £5 of power a month”. Bad siting of poorly chosen technology has proved another huge embarrassment for the wind industry once again. Mick Sagrillo’s comment: “So, what’s your problem? It’s a VAWT. They don’t need tall towers or exposed sites, remember?”
Meantime James Alan Rowan of Mag-Wind has been indicted for his fraudulent activities around vertical axis hype and nonsense.
But there is still a lot of vertical axis hype around on the web, and people still seem to love it.
João P. Monteiro has done some interesting studies of the performance of a 1200 diameter Recipe blade set in a wind tunnel and compared the results with theoretical predictions of a couple of simulation progams. The results are close. It’s unusual to see real world data for the Cp (performance) versus tip-speed-ratio. This can help us design wind turbines to avoid stall and maximise efficiency.
The full article in Journal of Wind Engineering and Industrial Aerodynamics is for sale here.
See this page for details of the results so far from this survey. Why not join in and contribute to the survey?
Here are a couple of the many charts on the results page:
See all the results here
Above is a link to a paper by Jon Sumanik-Leary in which he uses a study of a Scoraig power system (with 3 metre diameter recipe turbine) to compare with a Bergey wind turbine. Annual energy production is very close to my predictions although it drops off slightly in stronger winds because this site had a tower that leaned very slightly to the east, causing the turbine to furl prematurely in westerly winds.
Jon discovered that the higher peak power produced by the Bergey is strong winds was worth less than the shortfall in low winds. “When comparing between the locally manufactured and commercial SWTs, the simulation reveals that the increased energy yield generated by the Bergey XL.1 is largely wasted, as most of the extra power is generated when the batteries are already full.” The 3 metre recipe turbine actually does a better job of keeping the household supplied with electricity.
See also Jon’s blog
Above is a link to the full test report in French of a Recipe style 3.6 metre diameter grid connected wind turbine, built by Tripalium.
I can understand a bit of French, but I mostly look at the pictures, which I like because they show it producing a bit more energy than my predictions in the Recipe Book.
I put this international chart in for your info… it’s not part of the test report! (Hugh)
This is a high budget test site, and it is a privilege to have had such a test conducted on one of my designs. Thanks to Jay Hudnall of Ti’eole for doing this!
Here is a link to a video I made with Jay and a similar wind turbine in France.
I have been using a logic energy mobile logger for monitoring Scoraig wind turbines. We have produced some good power curve data for the homebrew machines on Scoraig and it’s also great for live monitoring of installations during the teething period. It’s great to go online and see what is happening in real time.
Logic Energy have a few pre-production LeNETmobile loggers of the latest type to sell. All working fine, but they need to get rid of them.
These are full advanced systems and the hardware (the LeNETmobile unit) would cost £300 each. The full cost including one year’s GSM (SIM card) and the portal website contract is £490. These prices include VAT.
- These are Energy loggers (for energy meters and analogue sensors). Sensors are not included.
- It’s a small production batch that they usually run before full production to test for any early issues. These are ok so nothing to worry about, the only noticeable thing is that the box as an extra hole for 2nd antenna that never was used.
- There’re a limited number of these and no plans for more – pretty much one off.
- These loggers have all 14 channels enabled.
For details or to buy one contact Eduardo at firstname.lastname@example.org
Charles Haynes has built a large ferrite alternator for a project that no longer needs it. The alternator can produce 3kW at 75 rpm with 90% efficiency. He is looking for a home for it. It’s pretty heavy though! At present it is in Vancouver, Canada.
Here are some photos. Leave a comment if you are interested in this alternator. Magnet rotors are 40 inches in diameter.
Here are some links to research work that has gone on recently in Berlin and Athens toward further development/documentation of the designs in the Recipe Book. Mostly it’s bench testing of alternators.
If anyone wants me to put notices of other work on this blog then just let me know! You can also find a lot of stuff at windempowerment.