Views: 0 Author: Site Editor Publish Time: 2024-01-11 Origin: Site
In the third edition of the International Solar Decathlon(SD) held in China, eight university teams joined forces to showcase innovative technologies in the solar energy sector. Organized and sponsored by the U.S. Department of Energy, this competition, often hailed as the "Olympics" of the solar energy field, has successfully conducted 17 sessions, attracting over 35,000 students from 200 universities globally.
>> Opening Ceremony and Overview of the Competition <<
The competition commenced on August 8, 2022, in Desheng Village, Xia'er Tai Town, Zhangbei County, Zhangjiakou City. Fifteen teams from 29 universities representing 10 countries participated in constructing high-performance houses primarily powered by solar energy, utilizing the latest technologies and theoretical designs. The competition encompassed ten evaluation criteria, including architectural design, engineering design, energy utilization and renewable energy for heating/cooling.
>> Highlights of the Teams <<
In this competition, the solar residences of the eight university teams showcased innovative applications of Cadmium Telluride (CdTe) photovoltaic (PV) power generation building materials. Various architectural photovoltaic integrated applications, such as solar curtain walls, solar roof tiles, solar glass sunrooms, solar glass railings, solar skylights, solar sunshades and Building Integrated Photovoltaics (BIPV) integrated roofs, were observed in these solar homes. Each team demonstrated profound wisdom by designing solar residences that are both functional and comfortable, presenting a fresh perspective on solar energy technology.
Team THU
From Tsinghua University
The "Grassland Ark" roof incorporates 352 units of aluminum-mimicking solar photovoltaic glass building materials (including 128 units of non-standard sizes), achieving a complete substitution for traditional construction materials, covering the entire roof. The continuous delivery of green electrical energy through these aluminum-mimicking photovoltaic building materials not only aligns seamlessly with the architectural aesthetics of the "Grassland Ark" but also integrates the functionalities and requirements of photovoltaic power generation, building materials and decorative effects into a cohesive whole.
Team BJTU
From Beijing Jiaotong University, Loughborough University
The residential project "BBBC" from Tsinghua University adopts photovoltaic as the primary energy source, employing a multi-energy complementation approach with "hydropower + fossil energy + biomass + wind energy" to address uncertainties in scenarios. This ensures resilient energy supply, achieving zero energy consumption while allowing energy feedback. The entire building, from power supply to electrical appliances, utilizes direct current, realizing a truly all-DC building. The project features 104 pieces of cadmium telluride solar photovoltaic glass in three different colors and transparencies – black, field yellow, and sky blue. These harmonize seamlessly with three colors of sunshades, creating a natural and aesthetically pleasing appearance highly appreciated by the participating teachers and team members.
Team R-CELLS
From Tianjin University, Oslo School of Architecture and Design, Tianjin Chengjian University
R-CELLS residence optimizes rooftop space, installing 52 standard photovoltaic building material products and 10 vibrantly colored transparent solar photovoltaic glass on an asymmetrical V-shaped roof. With a total installed capacity of approximately 35 kilowatts, the annual electricity generation is four times the predicted consumption. Supported by a battery storage system, the surplus electricity can be transferred to the grid, enabling the building not only to meet daily electricity needs but also to serve as an "energy producer" in power transactions. This feature reduces user energy costs and demonstrates high economic efficiency.
Team Qiju 3.0
From Xi'an University of Architecture and Technology, Southwest University for Nationalities
Team Qiju 3.0 showcases a rich variety of solar photovoltaic building integrated applications, including solar roofing, sunshade panels and photovoltaic railings. The solar roofing employs 160 standard solar roof tiles building material products, while the sunshade panels and photovoltaic railings feature 26 pieces of 20% transparent solar photovoltaic glass in different sizes and thicknesses. The application of photovoltaic sunshade panels and railings represents a breakthrough attempt in using solar glass building materials in green building applications, enriching the future scenarios of photovoltaic building applications.
Team BJTU
From Harbin Institute of Technology
The "Modular Sustainable Magic Box" residence is equipped with 149 standard-sized solar photovoltaic glass building material products, including 40 pieces of 20% transparent colored solar glass in red, yellow, blue, and green. These are installed on the rooftop & terrace, serving as both shading and decorative elements. The solar photovoltaic system is complemented by a battery system ensuring a minimum of 48 hours of operation without sunlight. Operating in grid-tied mode, it utilizes grid electricity when solar power is insufficient and feeds excess electricity back to the grid, maximizing energy efficiency.
Team SRF
From Shenzhen University, Royal Melbourne Institute of Technology
The Pixel House incorporates 78 pieces of 20% transparent standard-sized solar photovoltaic glass building material products in three scenarios: sunshade panels, photovoltaic sunroom and photovoltaic railings. Utilizing cadmium telluride solar glass building materials to replace traditional construction materials, the project achieves zero energy consumption through passive building design, photovoltaic power generation technology, product application and an intelligent heating, ventilation and air conditioning system.
Team CUMT&AGH&HSP
From China University of Mining and Technology, AGH University of Science and Technology in Krakow
The T&A House features a 50-square-meter skylight roof with 20% transparent solar photovoltaic glass building material products and 35 cadmium telluride solar roof tile building materials on the facade. The solar glass building materials not only meet the building's lighting needs but also seamlessly integrate with the architectural design. Incorporating advanced passive and active energy-saving technologies, this classic northern-style courtyard demonstrates the concept of green and zero-carbon development.
Team Hope Land
From Zhejiang Normal University, Shenyang Jianzhu University, Chemnitz University of Technology
The "Field of Hope" facade utilizes 40% transparent solar photovoltaic glass building materials for the solar curtain wall and skylight roof. It vividly demonstrates the flexibility of customizing light transmittance using cadmium telluride thin-film solar photovoltaic glass. While transparent solar glass products were traditionally used in large-scale projects, this project extends their application to residential settings, serving as a good demonstration of the market application of photovoltaic sunrooms and transparent photovoltaic curtain walls in future civil residences.
The solar housing projects from the eight prominent university teams have gained recognition in international solar competitions, providing valuable experience for the development and application of solar technology. This competition is not only a technological feast but also a collaborative win for university student teams, contributing to the advancement of the global solar energy field.
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