Solar photovoltaic power generation system in buildings
Solar photovoltaic power generation system in buildings
1. Introduction of photovoltaic and building integrated system
Building Mounted Photovoltaic (Building Mounted Photovoltaic, referred to as BMPV), also called solar photovoltaic building integration, photovoltaic building integration, solar photovoltaic building integration. First proposed by the World Energy Organization, it refers to the installation of photovoltaic power generation systems on existing buildings, or the simultaneous design, construction and installation of photovoltaic power generation systems and new buildings, which can not only meet the functions of photovoltaic power generation, but also The building is perfectly integrated and even enhances the beauty of the building.
The connotation of photovoltaic building integration:
integrated design. The content of the design should include the building and photovoltaic system, as well as other required devices and structures, and the walls and roof of the building should be decomposed into structural modules for integration.
Integrated manufacturing. Establish a dedicated production line and use this production line to manufacture large-scale, high-efficiency, low-cost manufacturing of the designed building structure modules.
Integrated installation. Use electric hoisting equipment to centrally install the produced structural modules on building structures such as houses.
2. Classification of photovoltaic and building integration systems
According to the different ways of combining photovoltaic arrays and buildings, the integration of solar photovoltaic buildings can be divided into two categories: BAPV and BIPV.
BAPV is BuildingAttachedPV, which means that the photovoltaic system is simply attached to the building. Common solar cell modules are used in the BAPV building. The solar cell modules are installed on the roof through brackets. Photovoltaic products are not part of the building.
BIPV stands for BuildingIntegratedPV. Building Integrated Photovoltaics (BIPV) is to integrate solar photovoltaic power generation products into the building itself and become an organic component of the building, thereby creating a new concept of energy generation in the building itself.
Generally, the building is still in the construction stage or in the design stage. It is considered that the building will use solar photovoltaic power generation, and the solar photovoltaic power generation system must be integrated into the building. In this case, solar cell modules and solar cells can be considered. General building materials (such as metal plates, etc.) are combined together as the surface material of the building; or the solar cell module itself is used as the roof material or curtain wall material to cover the surface of the building. In this way, solar photovoltaic modules truly become a part of BIPV buildings. Since the application of solar photovoltaic is considered during the construction or design stage of the building, the building design and photovoltaic power generation system design can be optimally integrated, so as to obtain The best combination of building and photovoltaic power generation system: not only maintains the beauty of the building, but also maximizes the power generation efficiency of the solar system.
3. Application form of integration of photovoltaic and building
