Structural glazing sealant protects solar-rooftop stadium in Taiwan

Kaohsiung Stadium, the main venue of the 2009 World Games, made its spectacular debut in July 2009. Designed by Toyo Ito & Associates, one of the top architects in Japan, and Ricky Liu & Associates from Taiwan, the stadium can hold 45,000 spectators.

In addition to its eye-catching, horseshoe-shaped appearance, the building is the first stadium in the world powered by solar energy, and has been awarded the “Green Building Certification” by the Taiwan authorities.

Search for an effective panel fixing solution

In order to maximize the natural daylight, 8,844 solar panels were strategically mounted around the roof of the stadium. The solar panels generate more than one million kilowatt-hours of electricity per year, which supports approximately 80 percent of the stadium’s energy needs. To achieve this success, architects and contractors needed to resolve a series of technical issues related to the built-in panels. The job required an effective panel fixing design with optimum energy transfer rate, plus excellent thermal and weathertight performance.

Four-sided structural sealant glazing saves the day

Dow Corning was consulted from the very beginning of the project, and ultimately recommended using four-sided structural sealant glazing to bond the glass solar panels to aluminum sub-frame. This approach maximizes the daylight exposure and hence the generation of clean solar energy by the solar modules. Each unit of the roof façade system has three glass panels, including two solar glass panels (containing solar cell and low-iron glass panels) and one blue tinted tempered glass pane. Dow Corning 983 Structural Glazing Sealant was used for bonding the solar panels and weatherproofing.

Key Participants

Construction Office, Public Works Bureau, Kaohsiung City Government
Toyo Ito & Associates
Ricky Liu & Associates
Fu Tsu Construction
Delta Electronics Inc.
Dow Corning - Silicone Sealant Provider

Products

Dow Corning 983 Structural Glazing Sealant

With the proven, silicone-bonding technology, the structural silicone not only helps this horseshoe-shaped solar roof building withstand earthquakes, acid rain, typhoons, humidity and extreme heat and UV radiation, but also improves its thermal and acoustic performance by continuous and effective sealing the facade. Dow Corning provides a complete solution, including high performance sealants and professional technical support, which ensures correct sealant application and long-term performance.

Leading the way for more BIPV success

The Kaohsiung World Games Main Stadium was the first 4-sided structurally glazed BIPV (Building Integrated Photovoltaic) roofing project that Dow Corning participated in Greater China. It is one of the largest BIPV projects in Greater China. Dow Corning silicone structural sealants allow creativity and design freedom, combined with lower life-cycle cost and improved thermal and acoustic performance of the facade. Dow Corning structural glazing sealants are now widely used in major BIPV facades in China, including the 2010 World Expo China, National Pavilion and Theme Pavilion.

Click here to view a short animated presentation about how Dow Corning solutions and support helped to create this revolutionary solar-powered stadium.

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