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Latest news

 

Media Release following our Dragons' Den pitch

Here's our online media release about Matthew Luethi's pitch to the UK Dragons Den today.

 

This episode of Dragons' Den is available to view online via the BBC's iPlayer (UK only) for a limited time. Look for Series 8,

Episode 7. 

23 August 2010

 

Watch us on UK Dragons' Den!

Matthew Luethi's pitch to the Dragons will be broadcast in the UK on Monday 23 August 2010 at 9pm on BBC2.

 

If you miss it, you'll be able to view it on the BBC's iPlayer (UK only). 

16 August 2010

 

 

Distribution enquiries & Order enquiries

The 500W VAWT silent wind turbine will soon be available for purchase in selected regions.

 

To pre-register your interest, please drop us a line by email: info@silentwindturbine.com

 

1 August 2010

 

 

Design registered for a cheap 250W barrel turbine for developing countries

Due to the mass of enquiries we've been getting from developing countries for a cheap, independent power source, we've developed exactly that.

 

The design is registered and the patent is pending.

 

 

Like all our turbines, the 250W barrel turbine (above) doesn't need any external power sources and is ideal for heating water, street lighting, security lighting and emergency lighting.

 

Here's a short video clip of the 250W barrel turbine in action. (9 seconds; 1.85MB; WMV format.)

 

This was filmed in approximately 6 knots of wind.

31 July 2010

 

 

Stay up-to-date with what's happening!

There are so many developments, you can read all the latest news on Twitter and Facebook.

 

Please join us there!

 

 

 

25 November 2009

 

 

Is it really silent?

Find out in this movie clip of our prototype silent wind turbine in action...

Click here to view our promotional video clip.

(48 seconds; 4.9MB; WMV format.)

 

Click here to read more news

 

  

 

The vertical axis wind turbine design and its regulating mechanism is protected by international patents and copyright.

Silent wind turbine – a breakthrough in renewable energy

 

The silent wind turbine by Luethi Enterprises Limited is an innovative vertical axis wind turbine (VAWT) for renewable energy production with many benefits over existing wind turbine designs. The unique patented mechanical speed regulator allows the wind turbine to function in extreme weather conditions and produce a constant flow of power.

 

Benefits of the silent vertical axis wind turbine by Luethi Enterprises:

 

  • Low start up speed: generates power at low wind speeds, from 3.6 m/s (8.1 mph; 13 kph; 7 knots).

  • Unique patented mechanical speed regulator: for power production in all conditions, from light winds to gales and gusts.

  • Constant power output: even at high wind speeds as it always faces into the wind.

  • Independent: as there is no electronic steering system, no power supply is needed, making it suitable for installation in remote areas. (Other turbine systems need up to 80% of their power to operate their electronics.)

  • Durable: no gearbox means easy maintenance and no expensive parts.

  • Easy to maintain: even by semi-skilled engineers.

  • No danger to wildlife: as there is no flight window for birds.

  • Virtually silent: as the blades work with the wind, rather than cut through it.

Above: an early prototype easily powers LED street lighting.

This prototype has been in situ for 3 years and still going strong, with no maintenance needed despite several storms hitting the area.
   

 

“This is the best idea of a wind turbine I have ever seen and I have written books about turbines!”

 

   - Dr. Tom Shelley (PhD, CEng) Technical Editor, Eureka Magazine

 
   

Above: The new blades are aesthetically pleasing - as well as extremely efficient.

Above: The blades are curved on both planes.

 
   
Above: Field testing of the latest prototype of the 500W DC silent wind turbine at Chatham Maritime. The prototype in the photo above has moulded fibre-glass blades.
 

The above VAWT prototype yielded the following results:

  • Startup Wind Speed: 3.5m/s = 8.1mph or 13km/h or 7 Knots

  • 4.2m/s (10mph) = 50 rpm producing 10VDC =130W

  • 8.3m/s (19mph) = 100 rpm producing 20V DC = 260W

  • 13.1m/s (30mph) = 150 rpm producing 28V DC = 360W

  • 18.5m/s (42mph) = 200 rpm producing 36V DC = 470W

  • 22 m/s to 35 m/s = (50 mph to 80 mph) producing 38V = 500W

Size of this model: 900mm wide; 1000mm tall

Weight (Including 1000mm mast): 65kg

 

For more details on the benefits of this design, and how the turbine works, see the design overview.

 

How is the turbine used?

 

See the application and installation examples.

 

How can I find out more?

 

Click here to read about the opportunities available, or for any other enquiries please contact us.

 

Distribution enquiries & Orders

 

The 500W VAWT silent wind turbine will soon be available for purchase in selected regions.

 

To pre-register your interest, please drop us a line by email (info@silentwindturbine.com) or complete and submit the following form:

 

Name: *
Email: *
Phone: *
Country:
Comments:
* = required

 

  
           
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Luethi Enterprises Limited       Email: info@silentwindturbine.com       Phone: +44 (0) 1634 711 179           

           

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