Beijing trapezoidal glass facade improves energy efficiency

Beijing trapezoidal glass facade improves energy efficiency

The recently-completed Beijing Greenland Center features an elegant trapezoidal glass facade that’s claimed to improve its energy performance.

New York design firm SOM says that the trapezoid glass facade improves the building’s thermal performance, cutting down on solar heat gain compared to a completely flat glass facade.

The pattern of the glazed facade is inspired by the bas-relief sculpting technique and comprises two types of trapezoidal Low-E (efficient) glass modules. One tapers upward, the other downward, with the two alternating across the facade, refracting the daylight inside and out.

The firm expects the Beijing Greenland Center to achieve a 30 % reduction in energy use and water consumption compared to a baseline building. 

Besides the glazed facade, the building includes some energy-efficient tech, including variable speed pumps for heating and cooling, an evaporative cooling system, and a thermal wheel (an energy recovery heat exchange system that recaptures exhaust gases and hot air and reuses them for heating).

Comprising 55 floors, the Beijing Greenland Center is located in the Dawangjing business district and rises to a height of 260 m (853 ft). The interior contains office space and 178 apartments and the building is also connected to an attached multi-story retail zone.

 

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