Differences between installing photovoltaic arrays inside buildings and on rooftops in Nanjing

       The integration methods of photovoltaic arrays with buildings can be divided into rooftop installation and side facade installation. It can be said that these two installation methods are suitable for most buildings.

      Rooftop installation forms mainly include flat roofs, sloped roofs, and photovoltaic skylights, among which:

       Flat roofs: On flat roofs, photovoltaic arrays can be installed at an angle to maximize power generation. Conventional crystalline silicon photovoltaic modules can be used, reducing component investment costs. This method is often economically favorable, but its aesthetic appeal is generally average.

      Sloped roofs: In the Northern Hemisphere, roofs facing due south, southeast, southwest, due east, or due west can be used for installing photovoltaic arrays. On south-facing sloped roofs, arrays can be installed at an optimal or near-optimal angle to achieve higher power generation. Conventional crystalline silicon photovoltaic modules, known for their good performance and low cost, can be used, making this method economically advantageous. Additionally, it does not conflict with residential functions, integrates seamlessly with the roof, and offers good aesthetics. The power generation performance of roofs with other orientations is relatively lower.

      Photovoltaic skylights: These refer to building components that use transparent photovoltaic cells as skylights. They offer excellent aesthetics and meet transparency requirements. However, photovoltaic skylights require transparent modules, which have lower efficiency. In addition to power generation and transparency, skylight components must meet certain mechanical, aesthetic, and structural connection requirements, resulting in higher module costs and overall power generation expenses. They enhance the social value of buildings and promote green concepts.

      Side facade installation primarily refers to the installation of photovoltaic modules on the south, east, or west walls of buildings (mainly in the Northern Hemisphere). For multi-story and high-rise buildings, walls are the external surfaces with the largest area exposed to sunlight. Photovoltaic curtain walls are a practical and widely used application form. Depending on design needs, transparent, semi-transparent, or ordinary transparent glass can be combined to create different building facades and indoor lighting effects. Double-layer photovoltaic curtain walls, point-supported photovoltaic curtain walls, and unitized photovoltaic curtain walls are common forms of photovoltaic curtain wall installation. In addition to photovoltaic glass curtain walls, photovoltaic exterior walls and photovoltaic sunshades can also be installed on building facades.

       Mangzhong Construction is an integrated "design + product + service" supplier based on technological research and development, supported by design optimization, system integration, and intelligent operation and maintenance services. At the same time, Mangzhong Construction focuses on investment in technological research and development, building a professional system design team to provide technical design services and optimization for photovoltaic power generation systems of different regions, types, and scales. Additionally, based on industry characteristics, customer needs, its own business strategies, and years of industry experience, the company offers digitalized, customized, and professional one-stop solutions for photovoltaic systems.

      Mangzhong Construction is committed to photovoltaic power plant investment, development, design, construction, intelligent operation and maintenance, professional consulting services, and photovoltaic power plant equipment recycling.

Company Name: Jiangsu Mangzhong Construction Co., Ltd.

Business Scope: Photovoltaic power plant EPC and photovoltaic solar power plant investment

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