about small wind

The availability of low cost fuels and energy to individuals and businesses is coming to an end. It is inevitable that energy prices are going to rise and that energy security will become an increasing political issue in the UK and around the world. The reliance on fossil fuels is not only unsustainable due to energy price rises but also the impact they have on the climate due to CO2 increases effecting global warming.

It is imperative that economies and individuals begin to conserve energy, use less and switch to the production of energy from renewable source. The reduction in energy consumption and move to renewable sources will reduce CO2 concentrations and slow the rise in energy prices.

The change to renewable forms of energy production is a massive undertaking. There is no single source of renewable energy production that provides the answer, but a diverse combination of renewable technology deployment can make massive contribution to the reduction in fossil fuel use.

Map of european wind distribution

The UK has the largest wind resource of any country in Europe, making wind power one of the renewable sources of energy technologies that should be considered in many locations.

quietrevolution design and manufacture small-scale wind turbines designed to be sited at the point of energy use. Small and large scale wind technologies, both onshore and off-shore are all part of the energy mix required. Along side other renewable technologies and the deployment of smart technologies there can be a reliable energy supply to all individuals and businesses.

The EST estimate that approx. 3.5TWh could be produced from small wind technologies in the UK, or roughly 5% of our gross energy consumption.

The UK has a great wind resource, however even in a small island nation there are good sites and poor sites and careful consideration on the exact location is required prior to deployment of a wind turbine.

Environment Energy Centre, Leyland

Key factors that should always be considered are:

  • Proximity to the Coast
  • Topography – hill tops are good sites, while valleys are not
  • Elevation above the ground – the height of mast or height of building, taller is almost always better
  • Open flat country side

There is a great deal of discussion within the wind industry and the press about wind turbines for low wind speed sites and urban wind turbines.

quietrevolution turbines like any wind turbine requires a sufficient wind resource to be effective and to produce energy at a reasonable cost.

The power in the wind is a cubic relationship to wind speed, i.e. if the wind speed doubles there is actually eight times the power.

The laws of physics show that it is not possible to produce high levels of energy from a low wind speed site. These sites are common in towns and urban areas due to surface roughness and that many UK towns are in valleys. There are locations within urban areas that do have high winds, however these are generally limited to tall buildings, sites with beneficial underlying topography or adjacent to a large body of water.

Optimising Wind Energy in the Urban Environment

quietrevolution have designed their turbines to be sited close to the point of energy use and have developed a leading industry understanding of the issues relating to good siting and how to obtain the highest possible yield from highly turbulent sites.

quietrevolution have over 170 turbines deployed and have measure the effects of turbulence on our power curve. We have measured data from field installations that show even in high turbulence environment [FTI 40%+] we maintain and in some cases exceed the power curve as measured in the NRC Canada wind tunnel.

Using real wind data, our modelling shows that QR produces 20% - 40% more energy than a conventional similar sized-HAWT in a typical location near buildings, where the wind is turbulent.

Typically, reasons for wind turbines causing disruption or being refused planning permission include its visual impact, noise and vibration. The quietrevolution turbine’s elegant design is geared towards adding visual appeal to its surroundings, and the aerodynamics of the vertical axis design mean that noise and vibration is reduced to near silence. Many planning departments in councils across the UK support quietrevolution as their preferred solution for small wind in an urban environment.

When considering installing a turbine a customer should consider the following:

  • Vibration – we have researched this issue in depth and deploy systems to reduce vibrations to levels that are not measurable within the building.
  • Aesthetics
  • Safety – we deploy a duel braking system and various sensors to detect faults / out of balance/ impact / vibration etc.
© Quiet Revolution Ltd 201223 B&C Berghem Mews, Blythe Road, London W14 0HN