The hottest vacuum glass will have great potential

2022-08-20
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Vacuum glass will have great potential in the passive housing market

recently, the science and technology and industrialization development center of the Ministry of housing and urban rural development and the German Energy Agency jointly held the "third Sino German Cooperation Seminar on passive ultra-low energy consumption building technology exchange" in Beijing to discuss key issues in passive ultra-low energy consumption building design and construction, and the selection of key material products and technologies

At the seminar on recyclable paper products, experts in the industry unanimously pointed out that passive housing will become the inevitable trend of housing development. In the process of vigorous development of passive housing, its strong potential for building energy conservation and its important role in promoting the implementation of green building materials have also been recognized by the industry

the emergence of passive houses has put forward very strict technical index requirements for the doors and windows of the external envelope. It not only has high requirements for heat transfer coefficient and shading coefficient, but also puts forward strict regulations for the heat transfer coefficient, daylighting coefficient, wind pressure resistance, water tightness, air tightness and installation system of the whole window

as one of the most critical components of passive housing - the external window, how to choose it affects the heartstrings of many people inside and outside the industry. Experts and scholars in the industry also unanimously and publicly believe that vacuum glass is the first choice among passive room windows

vacuum glass has become the "new favorite" of passive housing by virtue of its advantages.

"passive housing" is a new energy-saving building concept advocated by foreign countries. At present, it is also an important opportunity and platform for China to promote building energy conservation. At present, vacuum glass has been used or planned to be used in some passive windows in China. Why choose vacuum glass in ultra-low energy consumption buildings such as passive houses

first, meet the UW requirements of passive houses for the whole window system

"passive houses" as the integrator of various technical products, due to the higher upper limit temperature, such a low energy consumption standard is achieved through the building envelope system with high heat insulation and sound insulation, strong sealing and renewable energy. Strengthening the thermal insulation performance of the envelope system is the most important technical measure in the architectural design and construction of passive houses after the economic stimulus in 2008. Applying vacuum glass to the doors and windows, curtain walls or daylighting roofs of buildings is like putting a "thermos bottle" on the building, which can play a very good role in heat preservation and insulation. In addition to energy conservation and environmental protection, it also makes people working and living in the building feel that the temperature is appropriate and the seasons are like spring

II. The service life of the product meets the requirements

passive houses require that all building materials have the same service life as the building, and the building materials cannot be replaced within 30 or even 50 years

looking at all kinds of products in the whole glass industry, at present, vacuum glass is made of inorganic non-metallic materials. Through the placement of patented getter, the residual gas is effectively absorbed, the vacuum degree can be maintained for a long time, and there will be no performance degradation, aging failure and other problems in harsh environments, so that the actual service life of vacuum glass can reach more than 25 years, The product performance can meet the requirements of passive houses for the service life of high-quality houses

of course, the advantages of vacuum glass are far from so. For example, it has the advantages of low U value of heat transfer coefficient, high visible light transmittance, adjustable total solar transmittance and glass selectivity coefficient, long service life, wide application areas, good sound insulation and anti condensation performance, etc. Its Comprehensive Performance can not only meet the market demand, but also meet the technical requirements of high-end customers. Therefore, the ultra-low energy consumption buildings of passive houses will choose vacuum glass

(the concept of "passive house" building was low C in Germany in the 1980s) product standard; It is built on the basis of energy consumption buildings. In 1988, Professor Adamson of Lund University in Sweden and Dr. fester of Germany first proposed this concept. They believed that "passive room" buildings should be buildings that can maintain a comfortable indoor thermal environment without active heating and air conditioning systems.)

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