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25 November 2009

 

Luethi Enterprises shortlisted for 2009 British Engineering Excellence Awards (BEEA)

Luethi Enterprises is shortlisted for Start Up of the Year Award in the British Engineering Excellence Awards.

The winners will be announced at London's Globe Theatre on 1 October 2009. Read the media release.

1 September 2009

 

 

Field testing of Silent Wind Turbine yields performance data

The field testing programme at SEEDA’s site at Chatham Maritime has allowed for significant progress to be made in the Silent Wind Turbine’s development.

 

The 500W DC micro wind turbine prototype spent a number of months undergoing field testing: read the performance data here.

May 2009

 

Wind-powered water pump model built

Luethi Enterprises Ltd has been receiving numerous requests from around the world for a wind-powered water pump that's reliable and cost-effective.

 

A basic model has been built, revealing that the Silent Wind Turbine by Luethi Enterprises is an ideal solution. Such a pump would benefit drought-ridden countries as well as fisheries and aquatic centres. March 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.)

19 April 2008

 

Click here to read more news

 

  

 

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.

 

 

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

 

 

  
           
Creating new and alternative solutions in energy production
           

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

           

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