Application of Photovoltaic Shading Shutters in Zero-Carbon Buildings

On July 6, Yingli Group and other units jointly established the Zero-Carbon Development Research Institute, which is also the world's first zero-carbon research institute.

What is zero carbon?

Zero carbon is to reduce carbon sources and make the algebraic sum of carbon sources and carbon sinks equal to zero through planning, overall planning, and application of reducing sources and increasing sinks, green energy substitution, carbon product sequestration, carbon trading, and ecological carbon sink compensation.

The concept of zero-carbon development has caused a sensation in the photovoltaic industry and even the entire environmental protection industry. Vision Jun mainly studies photovoltaic green buildings, that is, the category of carbon sinks, so let's talk about carbon sinks in buildings first. In the design of green buildings, we must use all available resources and design concepts to increase the ability of the building itself to generate power resources. The application of roofs, building facades and other areas is very common. Now Vision Jun recommends you another one Areas in buildings that can create carbon sinks - windows. Billions of city dwellers now live in residential or office buildings without roofs to install photovoltaic modules, but with massive windows. After the development of the curtain and sunshade industry in recent years, it no longer simply pursues the function of shading, but changes to how to make full use of the sunlight it blocks to generate electricity.

Knowledge of sunshade devices

Window is the main part of building thermal insulation. According to estimates, the heat loss of window accounts for more than 50% of the energy consumption of the house. In addition to the structure of the window itself, which determines the energy-saving performance, the shading device of the window also plays a vital role. Shading devices are generally divided into external shading, inner shading and central shading located between two layers of glass.

External shading is the most widely used. It is suitable for large-area windows and skylights facing south, east and west, not only to prevent direct sunlight, but also to prevent the indoor temperature from rising.

The inner shading is mainly used to prevent glare and supplemented by shading. It is suitable for heating areas in winter. While preventing direct sunlight, it can allow sunlight to enter the room to increase the temperature.

The central sunshade has the characteristics of both internal and external sunshades. It has strong integration and is not easy to be damaged, but the cost is high.

Through the combined use of different shading devices, the air conditioning load can be greatly reduced in summer, and heating energy can be saved in winter. According to statistics, if Europe fully promotes building shading technology, it can reduce the emission of 80 million tons of CO2 every year. In Germany, whether it is an office building, a commercial building or a residential building, shading devices can be seen everywhere, and the application is very common. It can be seen that Germany attaches great importance to the research and development and application of architectural shading technology.

Domestic status

At present, my country is in the peak period of construction, with an annual new construction area of ​​about 2 billion square meters, more than the total annual new construction area of ​​all developed countries. More than 80% of the existing buildings are high-energy-consuming buildings, and the energy consumption of buildings is generally more than three times that of developed countries such as Germany and Denmark. times; building energy-saving technology is relatively backward, and there is a big gap with western developed countries in terms of design level, building technology, equipment and material manufacturing and application. Therefore, my country's building energy saving potential is huge and the task is arduous.