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Pearl River Tower, Guangzhou, China

Pearl River Tower This is the architectural rendering of a building designed by Skidmore, Owings & Merrill; it is planned to be 71 stories, 2.2 million square feet, and have a "net" zero-energy footprint. The building is designed to use wind turbines, radiant slabs, microturbines, geothermal heat sinks, ventilated facades, waterless urinals, integrated photovoltaics, condensate recovery, and daylight responsive controls. I first noticed mention of this incredible project in an article of Architectural Record Magazine.

According to Roger Frechette, director of MEP Sustainable Engineering at SOM, Chicago, the building's facade was designed "to accelerate the wind as it moved through the opening in the building." Power potential is the cube of wind velocity, and SOM initially estimated that the design would increase wind velocity to 1.5 times ambient wind speeds. Actually, models tested wind speeds of up to 2.5 times ambient wind speeds in some cases. In translation: the building design could generate power 15 times greater than a "freestanding" turbine.

According to a PR Newswire article, groundbreaking is set for July 2006 (which I'm not sure if this happened or not) and occupancy in fall 2009. In addition to the wind energy concept, the building will be designed with avant-garde solar technology to capture solar rays for conversion into energy.

So what are the benefits of a modern, sustainable commercial office building? First, the building looks amazing! Second, it can be an experiment and model for future buildings. Third, buildings that are built to be sustainable, or energy independent, are better. They are not dependent on the grid. They aren't levered to the cost of grid energy (such as the price of coal, nuclear energy, or even other alternative sources provided into the grid). They leave a lighter footprint on the earth and its atmosphere--zero energy buildings are the epitome of natural resource frugality. Fourth, it can be healthier to live in. Fifth, it will create attention and draw tenants for publicity and other reasons. Sixth, the operating costs of this type of building are optimized and likely to be minimal when compared to non-sustainable buildings. Etc. Etc.

This building is a step in the right direction for commercial building design. I hope more and more buidings of this caliber can be transplanted all over the United States. Through sustainable design, countries can place themselves in a position to be less reliant on natural resource providing countries. As we've seen with the oil situation, that can be a big-time jam. Sustainable building--commercial and residential--is the road we should be taking.

Extra Links:
+World Architecture News

+Business Week/Architectural Record


I am cheering for this building too. Certainly, the purpoted goal is laudable, and if it works, the technology could be revolutionary. But there are a few things that keep me skeptical. Number one of all these things is the design of the wind turbine system. I've read about some studies on wind turbines that concluded that it is impossible to funnel the air towards the rotor in order to increase wind velocity, which is what the facade of the Pearl River tower is trying to do. The basic problem as I understood it was that turbulence caused in the funnel basically cancelled out any acceleration in the windspeed caused by the narrowing of the funnel. Apparently a better method is to reverse the direction of the funnel and shape it like a cylindrical airfoil.

Also, the claim that this is a "Net zero-energy", building and thus off grid, is a bit dubious, because, while the building is off the electrical grid, it PIPES IN NATURAL GAS to power huge fuel cells which will provide electricity to the building. The idea is that you reduce the losses in the lines by producing the electricity on site, which is fair enough, but it's kind of a misnomer to say "we're off grid" when you're piping in fuel to produce energy. To me off grid means you are getting your power though some RE systems. Also, contrary to what is said in the entry above, this means the cost of running the building is somewhat tied to the cost of energy prices.

Anyway, I hope I'm wrong, and I hope the folks at SOM figured out a way to make this work, because there certainly are alot of interesting things going on in this building.

The building is designed to use wind turbines, radiant slabs, microturbines, geothermal heat sinks, ventilated facades, waterless urinals, integrated photovoltaics, condensate recovery, and daylight responsive controls. This is really an incredible project.

I have hopes for this tower. I hope it lasts


Well, most area are not safe, not too much things to see as compare with Beijing, Shanghai, Xian, etc. However, it is still one of the business center as a lot of factories are in or around Pearl River Delta area.anaheim banquet hall

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