United Kingdom

United Kingdom

HOUSE POWER

Urban homes could generate their own electricity if a roof wind system designed by UK energy consultant Derek Taylor is developed successfully. The Aeolian Roof Wind Energy System is one of a family of new simple planar wind concentrators which his company, Altechnica, is exploring for buildings.

In appearance more like a roof venting system than a conventional wind turbine, the device is a cross-flow wind turbine. It would be installed along the length of the roof ridge allowing a large collection angle despite being in a static concentrator. According to Taylor it is best suited to buildings oriented to take full advantage of the prevailing wind direction and which have dual pitch or curved shell or vaulted roofs. It takes advantage of the airfoil type of effect these roofs have on air flow passing over them. The aeolian roof system enhances this effect by means of a planar concentrator consisting of a two-directional airfoil section similar to an upside down wing.

Taylor claims that as well as minimising visual impact, the system is quieter than conventional small wind turbines because there is no gearbox. His initial calculations suggest that in windy areas the system should meet the electricity requirements of a low energy house. He is now looking for sponsors to enable construction of a prototype.

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