[permaculture] Solar chimney to be built in Oz - large-scale renewable energysolution for the future

Lawrence F. London, Jr. lfl at intrex.net
Sun Mar 2 05:30:33 EST 2003

  Sunday, 5 January, 2003, 03:20 GMT
Australia plans world's tallest tower
An Australian power company is planning to build the world's tallest structure - a solar tower - in the middle of the outback.

The project is part of a global campaign to encourage the use of more renewable energy.

Enviromission says the tower, at a proposed height of 1,000 metres (3,300 ft), will be more than twice the size of the world's current 
tallest freestanding building, the Canadian National Tower in Toronto.

The one billion Australian dollar (US $0.56 bn) project is being backed by the Australian Government, and is expected to be completed in 
2006 in the remote Buronga district in New South Wales.

If successful, the structure could provide enough electricity for 200,000 homes. It will save more than 700,000 tonnes of greenhouse gases 
which may otherwise have been emitted by coal- or oil-fired power stations.

Enviromission chief executive officer Roger Davey told Reuters news agency: "Initially people told me 'you're a dreamer', there's no way 
anything that high can be built, there's no way it can work".

"But now we have got to the point where it's not if it can be built, but when it can be built."

Huge monolith

The proposed structure will have a width similar in size to a football field and will stand in the centre of a huge glass roof spanning 7km 
(4.3 miles).

The sun will heat the air under the glass roof, and as it rises an updraft will be created in the tower, allowing air to be sucked through 
32 turbines.

The turbines will then spin, generating power 24 hours a day.

The tower was developed by German structural engineers Schlaich Bergerman, who built a 200-metre-high demonstration power plant in 
Manzanares, Spain, in 1982.

The tower proposal has received the support of the Australian and New South Wales governments, which have defined it as a project of 
national significance.

The authorities plan to fit the tower with high intensity obstacle lights to prevent aircraft from crashing into it.



2003/01/05: BBC: Australia plans world's tallest tower

2002/08/19: New Scientist: Kilometre-tall power tower approved

2002/08/19: Guardian(UK): Real power from nothing but hot air -
Australia plans 1km-high convection tower to supply 200,000 houses


Other Useful Solar Chimney courses/projects:

SB&P: Solar Chimney

U of Florida: Solar Chimney

Structurae: Solar Chimney in Manzanares

lfl at intrex.net

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