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The hotel lobby employs sloped solar glass with varying levels of transparency for its roof design, improving natural lighting and ventilation in the deep podium area. The angle between the roof and the horizontal plane is carefully adjusted to balance power generation efficiency and indoor spatial perception. After simulating and comparing various levels of light transmittance, a 40% light transmittance solar glass was selected to achieve the optimal balance between interior transparency and shading requirements, creating a comfortable indoor environment. The skylight glass consists of triple-laminated, two-cavity tempered ultra-clear glass, with solar cells located in the outer laminated glass, effectively absorbing solar radiation and providing thermal insulation to reduce air conditioning load.
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The solar facade consists of 1,096 pieces of semi-transparent CdTe thin-film solar glass, each sized 1,200mm x 600mm x 6.8mm, covering a total area of 0.72 square meters. The unique feature of this glass lies in the thin black lines embedded within the double-layer glass interlayer, visible only within a distance of less than two meters. Beyond that distance, only the color of the entire panel is visible. (CdTe thin-film solar panels are available in red, blue, orange, and green.)
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In addition to the exquisite lighting effects at night, Fountain Square is most remarkable for incorporating cadmium telluride solar glass products underwater, making them an integral part of the water feature. This aspect poses the greatest challenge and difficulty for the project. On one hand, it demands extremely high waterproof performance for solar glass products, and on the other hand, it presents challenges in waterproofing during the construction process.
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