As one of the most important application forms of building energy efficiency, photovoltaic building integration is moving from concept to landing. More and more people are realizing that integrating PV modules with building materials is a double benefit for photovoltaic industry and construction industry. In the process, a new revolution of green development was set off.
According to the data, in the next 4 to 5 years, the applicable area of China's urban photovoltaic building integration will reach 1.79 billion square meters, and it is estimated that it will generate about 61.5 billion kWh per year, which can reduce carbon dioxide emissions by 52 million tons, which is equivalent to a reduction of 16 million vehicles. Exhaust emissions or planting 2.9 billion trees.
On this basis, photovoltaic building integration is leading a new way out for future urban development. The wide application of photovoltaic modules has made ordinary buildings energy-efficient, green, and environmentally friendly.
Weak industrial innovation capabilities
Technology should become a breakthrough
The research and application of photovoltaic building integration in foreign countries has been going on for a long time. In China, the photovoltaic building is still a huge blue ocean. As one of the main venues for the Beijing Olympic Games, the National Stadium has a large area of glass curtain walls shining in the same time. It also hides a huge photovoltaic power station with an annual power generation of 97000 kWh, which has become a typical example of China's early photovoltaic building integration.
With the favorable policies, with the introduction of relevant support and subsidy policies, it has become a strong voice to make photovoltaic buildings become the mainstream of distributed photovoltaics. How to make the integration of PV industry and green buildings become a transformation and upgrading of the traditional construction industry. , New ideas for energy saving and emission reduction.
The “Intelligent Photovoltaic Industry Development Action Plan (2018~2020)” (hereinafter referred to as the “Action Plan”) that was just released is to accelerate the industrial technological innovation, enhance the level of smart manufacturing, promote the deep integration of the two, and develop intelligent photovoltaic integrated transportation. Wei, promoted application demonstration in featured industries, actively promoted green development, improved the technical standards system, accelerated the construction of public service platforms and other four major areas and put forward related key tasks. It can be seen from this that China's photovoltaic industry is from 'large' to 'strong' there's still a long way to go.
In fact, the development of China's photovoltaic industry basically relies on the introduction of foreign equipment and production lines, and the core technology is still subject to human control. Although the strength of domestic photovoltaic companies has been continuously improved in recent years, key enterprises have increasingly attached importance to the investment in research and development, but due to the Lack of personnel training, lack of innovation in industrial development, will inevitably affect its application development in the downstream of the construction and other industrial chains.
As one of the most important forms of application in the photovoltaic industry, photovoltaic building integration is closely related to the development of the photovoltaic industry.
With the advancement of technology, driven by smart innovation, the quality and efficiency of China's photovoltaic industry will usher in a rapid increase. With the R&D strength in the market, leading companies in technology reserves will gradually emerge. Photovoltaic and urban architecture will be perfect. 3. The fusion, building built with photovoltaics is like a piece of well-carved artwork, highlighting a new type of photovoltaic beauty.
Experts emphasized that technological development occupies an important position in the photovoltaic industry. Since China’s major photovoltaic technologies still need to be imported from abroad, the serious dependence of technology determines that China’s photovoltaic industry cannot achieve a fundamental breakthrough, nor can it have strong international competition. Therefore, the development of the photovoltaic industry needs to find breakthroughs in terms of technology, implement technology development strategies, accelerate technological upgrading, technology extension, technology promotion and technology diffusion to achieve.
Especially for photovoltaic companies, technological innovation and intelligent transformation will become the main direction of future industry development. PV companies need to constantly improve their own technological level, and move toward intelligence, information and automation, in order to compete in the fierce market competition. Based on.
In addition, the transformation and upgrading of photovoltaic companies also need to obtain policy support, encourage photovoltaic companies to produce advanced technology products, accelerate the elimination of outdated technology products, accelerate the upgrading of the photovoltaic industry, and constantly improve the competitiveness of enterprises.
Of course, the innovation and development of the photovoltaic industry also needs to strengthen personnel training, further increase the degree of integration of production, education and research, achieve collaborative innovation across the entire industry chain, and drive the photovoltaic industry to a higher level.
From passive to active
Energy use concept to change
Although China's photovoltaic industry ranks first in the world, but the market acceptance of photovoltaic buildings is still relatively low, a large number of building resources to be fully utilized.
In fact, the combination of solar energy and architecture makes solar energy an integral part of architecture. Integrating advanced solar technology products into buildings is an important way to build low-carbon, energy-saving, and environmentally-friendly green buildings.
Photovoltaic buildings are a key area of photovoltaic applications. The integration of photovoltaic buildings brings forth a new concept for energy generation in buildings, which saves valuable resources and changes the traditional way of energy application, making energy acquisition more convenient and energy use cleaner. .
'The development of human architecture has always been at the expense of increased energy consumption. When BIPV emerged, the building began to produce energy, regained harmony with nature, and ultimately will strike a balance between obtaining and returning to nature. The combination of photovoltaics and architecture has disrupted the history of building energy consumption only. This is a double transformation of the idea of building art and energy. 'The industry people have expressed such emotion.
Photovoltaic building integration realizes the combination of energy and architecture, and makes buildings move from passive energy saving to active energy saving. Insiders pointed out that in today’s world, green buildings, ultra-low energy buildings, and (nearly) zero energy buildings rely solely on conservation. Reducing energy consumption is not enough. It requires facilities with active production capacity. The use of distributed generation is one of the most direct and efficient ways.
In contrast, at present, the construction industry lacks universal attention to photovoltaic buildings. Real estate development, architectural design, and energy-saving renovation of existing buildings have a low enthusiasm for the application of photovoltaic buildings.
Therefore, changes in consciousness and thinking should soon follow the development of photovoltaic buildings. To do this, we must strengthen the guidance of consumer ideas and the cultivation of photovoltaic building market. We should use the concept of long-term sustainable development to see the benefits of photovoltaic buildings. The new form of global energy industry.
Seize opportunities
Use innovation for development
According to the data calculated by the National Research Center for Residential and Residential Environment Engineering Technology, the total building area in China will reach 70 billion square meters by 2020, of which the available south wall and roof area will be 30 billion square meters, and will be used according to 20% of the available area. Installation of photovoltaic system calculations, then the installed photovoltaic area will be approximately 6 billion square meters. According to the calculation of installing 1kW photovoltaic system for every 20 square meters, the maximum installed capacity of building photovoltaic in 2020 will be as high as 300 million kW. According to the annual average of the central and eastern regions. With 1200 hours of utilization, the building photovoltaic power generation in 2020 will be approximately 360 billion kWh, which is equivalent to the annual power generation of the 4.5 Three Gorges Power Station (calculated as the total power generation of the Three Gorges Power Station in 2013 of 8.827 billion kWh).
The main application of photovoltaic building applications is not only for all kinds of buildings (such as building roofs in urban and rural areas, high-energy-consuming enterprises, etc.), but also public facilities and structures. It can be widely used in residential buildings, commercial buildings, schools, hospitals, Airports, railway platform roofs, bus station ceilings, and roofs of factory workshops, which can also serve as functional parts of the building structure, replacing some of the traditional building components such as roof panels, tiles, windows, and building curtain wall shelters to form distributed photovoltaics The power generation system can be used immediately to meet the electricity demand of the electricity users and reduce building energy consumption.
In particular, in accordance with the national regional development strategy, the photovoltaic industry should be built in a 'One Belt and One Road' initiative, coordinated development of Beijing-Tianjin-Hebei, and construction of Xiong'an New District as an opportunity to nurture demonstration areas for optoelectronic building applications, seize opportunities, and seek new opportunities for photovoltaic building integration. development of.
The construction of a green, smart, new city is one of the seven major tasks for the Party Central Committee and the State Council to establish the Xiong'an New District. 'Building a green, smart new city, building a world-class, green, modern, smart city.'
Photovoltaic building integration, using the roofs, exterior walls, and open spaces of urban buildings, concentrating on contiguous development, system development, scientific matching of clean energy and smart grid, and realization of a city's energy smart management and operation of science and technology projects. It can be effective Reducing the building temperature can also save energy and reduce emissions, and mitigate atmospheric pollution, so as to realize the organic integration of smart cities, ecological cities, and low-carbon cities.
Accompanying the release of the Action Plan will inevitably accelerate the innovation and development of China's photovoltaic industry, better realize the application and promotion of China's photovoltaic building integration, and promote the integration of the construction industry and the new energy industry.
It is believed that in the future, with the development of photovoltaic building as an opportunity, more and more photovoltaic towns and photovoltaic new villages will be built around the country to further promote the concept of photovoltaics, integrate into people's happy life like spring weather, and let the future of photovoltaic industry shine. Also from 'big' to 'strong', it will truly promote the revolution in energy production and consumption and implement the concept of green development.
