QATAR 2 SHOWCASE STADIUM
Figure 1
will scour the chilled air from the stadium, exposing the players to untreated air. ‘We predicted that wind will be an issue,’ says Beaven. The extent of the problem, and finding appropriate solutions, is one of the areas that will be investigated further through monitoring actual performance of the Showcase stadium. The final component of Arup Associates’
Figure 2
design is a giant photovoltaic (PV) installation, located adjacent to the Fresnel reflectors on the stadium’s solar farm. The PVs are connected to the stadium, from where they feed Qatar’s national grid. They will generate electricity year round from solar radiation. Games take place in the evening so the PV’s are of little use to power the stadium. Instead, power for the stadium is
imported from liquid biofuel-powered generators or it is drawn directly from the
Figure 3
Work is being undertaken to monitor the Showcase stadium’s performance, as well as that of the various low carbon technologies
Figure 4
Four depictions of the expected flow of hot and cool air during day- and night-time conditions:
Figure 1 Preparing for match – hot day: Protection from direct sunlight and wind Diffuse light entry through north roof lights Underseat air supply
Figure 5
Figure 2 During evening match – hot, still day: Roof open (On a windy day the the roof will remain closed)
Figure 3 Mild day (most of the year): Roof and wall open Direct sunlight Entry openings for cross-ventilation
Figure 4 Mild evening (most of the year): Roof and wall open
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grid. However, the amount of electricity generated from PVs over a year has been calculated to exceed the total amount of electricity imported on match days. This allows the stadium to be described as a ‘zero carbon’ facility, according to Arup Associates. A curious part of electrical design is the inclusion of the biofuel-powered generators. According to Beaven, it is normal to power a stadium from generators to ensure certainty of electrical supply for critical matches. The electrical grid then acts as back-up should the generators fail. There is no shortage of gas to power generators in gas-rich Qatar. However, as FIFA is expecting Qatar to use ‘clean, renewable energy resources’. So the generators are biofuel-powered. Unfortunately, Qatar has no biofuel resources and will have to rely on importing ‘green’ fuel. Work is being undertaken to monitor the
Showcase stadium’s performance, as well as that of the various low carbon technologies, to see if they are appropriate to be integrated into the giant stadiums for the 2022 World Cup. Beaven is optimistic that Arup Associates is close to developing a suitable zero carbon solution: ‘This is a prototype; it can be improved and upscaled,’ he says.
July 2011 CIBSE Journal 37
Arup Associates
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