Advice Archives

Archive for the ‘Advice’ Category

Selecting a Wind Turbine Site

Posted on: April 15th, 2011

Wind Conditions Looking at nature itself is usually an excellent guide to finding a suitable wind turbine site. If there are trees and shrubs in the area, you may get a good clue about the prevailing wind direction. If you …]
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PPS 18 Planning Guidance

Posted on: October 21st, 2010

Planning Policy Statement 18 Renewable Energy Preamble The Department of the Environment (the Department) is responsible for planning control in Northern Ireland. The Planning Service, an Agency within the Department, administers its planning functions. The Department of Finance and Personnel …]
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Siting Turbines Near to Public Roads and Railways

Posted on: March 11th, 2009

FromPPS18 A85. Applicants are advised to consult at an early stage with DRD Roads Service for development affecting public roads. In the case of railway lines consultation should take place with Translink. A86. Although wind turbines erected in accordance with …]
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The Wind Rose

Posted on: March 4th, 2009

The Wind Rose You will notice that strong winds usually come from a particular direction. To show the information about the distributions of wind speeds, and the frequency of the varying wind directions, one may draw a so-called wind rose on …]
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Noise from Wind Turbines

Posted on: February 11th, 2009

Noise is a Minor Problem Today It is interesting to note that the sound emission levels for all new Danish turbine designs tend to cluster around the same values. This seems to indicate that the gains due to new designs …]
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Shadow Flicker from Wind Turbines

Posted on: February 4th, 2009

Wind turbines, like other tall structures will cast a shadow on the neighbouring area when the sun is visible. If you live very close to the wind turbine, it may be annoying if the rotor blades chop the sunlight, causing …]
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Park Effect

Posted on: November 3rd, 2008

As with the wake effect , each wind turbine will slow down the wind behind it as it pulls energy out of the wind and converts it to electricity. Ideally, we would therefore like to space turbines as far apart as …]
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Turbulence

Posted on: August 14th, 2008

You  have probably experienced how hailstorms or thunderstorms in particular, are associated with frequent gusts of wind which both change speed and direction. In areas with a very uneven terrain surface, and behind obstacles such as buildings there is similarly …]
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Tunnel Effect

Posted on: May 15th, 2008

If you take a walk between tall buildings, or in a narrow mountain pass, you will notice that the same effect is working: The air becomes compressed on the windy side of the buildings or mountains, and its speed increases …]
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Hill Effect

Posted on: May 11th, 2008

A common way of siting wind turbines is to place them on hills or ridges overlooking the surrounding landscape. In particular, it is always an advantage to have as wide a view as possible in the prevailing wind direction in …]
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