National Geographic Megastructures Episode Features - Bahrain World Trade Center with Norwin’s Wind
National Geographic aired its newest documentary, on the Kingdom’s first truly intelligent office buildings- the Bahrain World Trade Center (BWTC) with its three integral Norwin A/S Wind Turbine Generators, in the UK February 5, 2008. The program will be broadcast throughout February in the UK and in March in the US on the National Geographic Channel. The three (3) Norwin 225 kW horizontal-axis 29m diameter wind turbines are mounted on bridges at 60, 98, and 136 Meters which span the two 50-storey sail-shaped commercial office towers, which taper to a height of 240 meters, support the three 29m diameter horizontal-axis wind turbines. Inspired by Arabian wind towers, the sail-shaped towers funnel the sea breeze into the three wind turbines. They act as aerofoils, funneling, and accelerating the wind velocity between them. The vertical sculpting of the towers also progressively reduces the pressure so that when combined with the rising velocity of the onshore breeze at increasing heights, a near equal regime of wind velocity on each turbine is achieved. Through its positioning and the unique aerodynamic design of the towers, the prevailing on-shore Gulf breeze is funneled into the path of the turbines, helping to create power generation efficiency. Once operational, the wind turbines will deliver approximately 11-15 per cent of the BWTC’s energy needs, eliminating around 55,000 kilos of carbon from being emitted into the air annually. Incorporating the wind turbines as an alternative source of energy for the buildings will generate 1100 to 1300 MWh per year, which is equivalent to lighting 300 homes for more than a year and will create substantial annual savings.
This is the first time that a commercial development has integrated large-scale wind turbines within its design to harness the power of the wind to generate an alternative energy supply. The use of ‘type-rated’ turbines with minimal modifications ensured that the additional cost incurred by incorporating turbines into the project was reduced to around 3.5% of the overall project value making it a financial viable venture and since its initial design launch there have been a number of derivative projects in the region, a true testament to the viability of the project’s design. The two 50-storey iconic towers, will not only provide local and international companies with a landmark business address but are further set to create office space that achieves new standards in technological advancement. The towers are integrated on top of a three-storey podium, which accommodates a new boutique shopping centre, fine dining, business center and car parking.
World Trade Center Bahrain is featured as a rising symbol of achievement and a reflection of the region´s fastest-growing economy, the WTC Bahrain will be the world´s newest landmark and has already established a landmark low carbon environmental achievement. The site for the Bahrain World Trade Center is prestigiously located on the main King Faisal Highway in Manama, Bahrain
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