On November 5, 2018, the Huizhou Pohu Science and Technology Innovation Town Building Photovoltaic Integration (BIPV, commonly known as photovoltaic building) technology demonstration project completed by the National Energy Group and Country Garden Group was completed.
According to reports, this is the first copper indium gallium selenium (CIGS)-BIPV demonstration building in China successfully put into operation. It indicates that the Pohu Lake Technology Innovation Town will realize the self-generation of clean and green power and enter the era of "self-generation". It also indicates that CIGS technology is increasingly promising to open BIPV, a huge new type of distributed energy market.
The National Energy Group introduced to the energy headline editor. The demonstration building is located in Lihu Science and Technology Town, Zhongkai High-tech Development Zone, Huizhou City, Guangdong Province, with a total construction area of 5468.52 square meters. It adopts the core technology of the National Energy Group and independently produces CIGS films. Photovoltaic modules are used as building exterior decorative curtain walls. A total of 2037 CIGS photovoltaic modules were used in the project, with a total installed capacity of 198.61kW. The distributed generation model of "spontaneous self-use, surplus electricity access to the grid, and efficient use of nearby areas" was adopted, which effectively avoided the problems of large ground power plants and high energy storage equipment costs . After the project is completed, the annual power generation is 123,000 kWh, which can meet nearly 10% of the electricity demand of the building (National "Green Building Evaluation Standards" (GB / T50378-2014) 5.2.16 stipulates that renewable energy provides power generation ratio ≥ 4 % Will get the full score of 10). The proportion of power generation provided by CIGS photovoltaic modules in this project is far greater than the national standard, further improving the green development level of the building.
Country Garden Huizhou Bihu Technology Innovation Town BIPV Technology Demonstration Project is a component of the National Energy Group's general research project “Application of CIGS Solar Thin Film Power Generation Technology in the Integration of Photovoltaic Buildings” undertaken by the Ministry of Housing and Urban-Rural Development. The project achieved the unified design, construction, and acceptance of CIGS-BIPV for the first time in China, and adopted a number of technologies such as photovoltaic solar thermal integrated utilization technology, photovoltaic curtain wall quick assembly technology, big data, and cloud platforms to allow buildings to be powered by energy. Consumers are turning into energy producers. The demonstration building uses three innovative technologies:
Using a new generation of CIGS-BIPV products. The project uses CIGS-BIPV products independently researched and developed by National Energy Group. It is safe, beautiful, durable, and has high power generation. It is a new type of green building wall material, realizing the height of CIGS photovoltaic technology and building art. Integration, and can effectively provide renewable energy for buildings, greatly improving building quality.
Thermal efficiency building photovoltaic technology. The demonstration building innovatively developed a ventilated photovoltaic wall. The photovoltaic curtain wall and the inner wall form a vertical closed cavity, which not only solves the problem of fire prevention between layers of the building, but also reduces the temperature of photovoltaic modules and improves the efficiency of power generation. Ventilation louvers and cavity heat extraction systems are designed at the bottom and top of the curtain wall, and combined with air source heat pumps, the hot air in the cavity is collected and extracted to provide domestic hot water, which realizes the comprehensive utilization of thermal efficiency.
Quick assembly technology for photovoltaic curtain wall. The photovoltaic curtain wall integrated system adopts an innovatively designed frame curtain wall system and dry-hanging construction technology. It has a high degree of assembly, fast construction speed, and reliable safety performance. It has withstood the test of “Mangosteen” 14th typhoon and no damage was found.
It is understood that the National Energy Group has taken the CIGS-BIPV industry as one of the important main directions of strategic transformation, and formulated the development strategy of CIGS technology research and development, high-end equipment manufacturing, high-performance component production, power station applications, and BIPV. Through the layout of the entire industry chain, the core technical advantages of CIGS and its strong technological transformation and mass production capabilities are fully utilized, and the supporting conditions required for the development of the BIPV industry are fully equipped: First, it has strong technological research and development and transformation capabilities. The National Energy Group's Low-Carbon Clean Energy Research Institute has established technology research and development centers in Germany and China to form a dual engine that promotes CIGS technology research and development, and maintains its leading edge in technology. The National Energy Group established the Green Energy and Building Research Center to focus on the application research of the CIGS-BIPV system to accelerate the promotion of engineering application innovation and market promotion. At the same time, National Energy Group hired a number of academicians to set up the CIGS-BIPV expert committee, and combined with a number of universities and research institutes to provide comprehensive intellectual support for the CIGS-BIPV industry. The second is strong CIGS product production capacity. National Energy Group China Energy Conservation and Emission Reduction Co., Ltd. (hereinafter referred to as National Energy Conservation Company) established Chongqing Shenhua Thin Film Solar Technology Co., Ltd. as a holding company, and is constructing a 306M production line, which will be put into operation next year. The third is to increase research on CIGS-BIPV engineering standards. National Energy Conservation Corporation and the China Institute of Building Standardization cooperate to formulate CIGS-BIPV construction standards and specifications. The fourth is to complete the safety inspection work required by CIGS as a green building material. The National Building Materials Testing Center (CTC) tested the module's resistance to wind pressure and the impact of shotgun bags, which reached the national standard GB / T 7106-2008 level 9 and GB 29551-2013 type II solar photovoltaic laminated glass. Passed the International Electrotechnical Commission (IEC) fire resistance test certification, the certification level is A, which is a publicly accessible level requirement; Guangdong Jianyuan Testing Technology Co., Ltd. has tested the four characteristics of the curtain wall, air tightness, water tightness The four properties, including resistance, wind pressure resistance and in-plane deformation performance, meet the requirements of curtain wall safety regulations.
BIPV is not only an important market and hot spot for the photovoltaic industry's transition from a centralized ground station to a distributed power generation market, but also an important technical means for the construction industry to develop green buildings and near-zero energy consumption buildings. Building energy consumption is up to 45% of the total energy consumption of society. Reducing building energy consumption is an important part of the energy revolution. A voice in the industry believes that CIGS-BIPV technology will trigger a revolution in energy technology, a revolution in energy supply and a revolution in energy consumption, with a predictable market size of more than 100 billion yuan and huge potential.