Silent windmills combine nuclear and solar energy to provide clean, renewable energy. The QR5 is the only silent windmill in mass production, costing £25,000 with an installation cost of £5,000-£6,000. It uses a helical design to harness wind currents from different directions and is made of carbon fiber. Wind power is preferred over fossil fuels due to government subsidies and long-term energy security.
The silent windmills are a new breakthrough in wind energy harnessing, which will combine nuclear and solar energy to provide clean, renewable energy to industries, offices and homes around the world. It is very unlikely that wind will ever be a primary source of energy for our civilization – the wattage it provides is quite flimsy compared to even the smallest nuclear or fossil power plants. However, it is useful for niche applications and does not create pollution.
There are various types of silent windmills, both large and small, which have been proposed for manufacture. Currently, the only type of silent windmill in mass production is called QR5, sold by the British company Quiet Revolution. The cost is around £25,000 (about US$50,000), with an installation cost of £5,000-£6,000 (US$10,000-12,000). The company claims the windmill pays for itself after about 15 years of operation, depending on wind speed.
The QR5 is a small windmill, 5m (15ft) tall and 3.1m (10ft) in diameter. Instead of using a directional rotor like conventional windmills, which must change direction to face the wind, the QR uses three S-shaped blades that twist around a vertical axis, allowing it to be driven by the wind originating in any direction. Because the blade tips are closer to the shaft body than conventional windmills, quiet windmills move less air, resulting in less total noise.
Two commonly reported problems with windmills are noise and the eyesore factor. Silent windmills attempt to get around both of these concerns by incorporating a silent design and a more visually elegant appearance than conventional windmills. Quiet Revolution’s silent windmills place emphasis on the vertical element, allowing them to be more easily integrated into pre-existing trees and buildings. The helical design is intended to bring down violent gusts of wind, while minimizing vibration and noise. The QR5 is designed to be integrated in urban environments, where silence is a priority and space is scarce.
Because silent windmills based on a helical design are able to easily harness wind currents from different directions, they are ideal for urban environments where wind direction changes frequently. The entire assembly is made of carbon fiber, one of the strongest materials available in commercial quantities, which explains its cost. Like other silent windmills made of similar material, the QR5 can be hit by a baseball or flying debris with minimal damage resulting.
Wind power is also preferred over fossil fuels in many contexts because government subsidies are often available. Governments want their citizens to switch to renewable fuel sources to increase long-term energy security for their country.
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