中外媒体针对珠江城报道.docx

Chinas march towards green revolutionBBC environment analyst Roger Harrabin reports on the tower block under construction in China which could lead the way in green building technology.AdvertisementA closer look at the Pearl River TowerRising high through the polluted air of Guangzhou City in southern China is a 71-storey tower block which, according to its designers, will be the most energy-efficient in the world. Among a host of features designed either to make or save energy, the one that caught my eye was the shape of the Pearl River Tower itself. It is built in a curve, facing the prevailing winds. And it has been deliberately sculpted to increase the speed of that wind and force it through slots in the building where wind turbines will be located. Now, on many buildings, wind turbines are a waste of space because theres so much turbulence in cities. I heard an apocryphal story about a Japanese firm that installed a turbine which needed electric power to keep it turning to save the face of its would-be-green owners. But the American architects of this tower - SOM - insist that their experiments in a wind tunnel show this building will generate economically viable wind power. The vertical axis turbines will be located in the mechanical floors mandated by the Chinese government as emergency muster floors, so no usable office space will be lost. SOM claims that by thinking carefully about the use of space combined with energy-saving and energy-generating technology, they have been able to make unprecedented gains, so this building will potentially create as much energy as it uses. They are by no means the only architects to espouse the principle of integrated design, of course. But some observers believe that too many buildings are still being put up with a few bolt-on green features, without proper thought as to what could be achieved through a more considered approach. Take the cooling system in the tower. Most of the time, air conditioning is done by fat air du