Daylight and Natural Ventilation in High-Rise Construction Solution by: Skidmore, Owings & Merrill
The Zhengzhou Greenland Plaza tower utilizes a shading screen and an atrium to optimize use of daylight, reduce heat gain, and create natural ventilation.
The Triple Bottom Line
Environmental Energy consumption is 20% below ASHRAE 2007 standards.
Social Access to daylight reduces stress and increases productivity within the building.
Economic Water and energy efficiency drives the tower’s long-term commercial success.
The tower is designed to prioritize sustainability and optimize performance within Zhengzhou’s humid subtropical climate. The building’s shading screen — made from white aluminium panels — protects the tower’s exterior glass curtain wall from solar heat gain. Its precise cant also reduces the need for artificial lighting by enhancing daylighting via reflections. The integrated suite of sustainable features include a low-E glass curtain wall, a 20-meter heliostat that reflects sunlight down into the tower’s atrium, control systems that allow the building to be naturally ventilated, and low-flow plumbing fixtures that improve water efficiency by 30%. The 280-meter Zhengzhou Greenland Plaza tower is the tallest building in central China. Why a Sustainia100 solution? The tower outperforms the stringent ASHRAE 2007 energy efficiency baseline by 20%. The profile created by its shading screen also nods to the region’s cultural context, appearing reminiscent of the shape of traditional pagoda structures when viewed from a distance.
Developed: USA and China
“At Zhengzhou Greenland Plaza, passive strategies enhance comfort and quality of life with natural ventilation , advanced shading, and innovative daylighting .” Luke Leung, PE, LEED Fellow, Director, Sustainable Engineering Studio, Skidmore, Owings & Merrill
Zhengzhou Greenland Plaza’s integrated sustainable features, including its high-performance shading screen, make it one of the region’s most energy-efficient buildings.