Introduction:
People's impression of energy conservation may be visible and tangible things such as hydropower, but there is actually a "big energy user", that is, building energy consumption. Today, we have to consider not only how to save energy, but also how to use tools and technologies to achieve excellence.

High-energy-consuming buildings will bring a heavy energy burden and even affect the pace of sustainable development. The research shows that the total energy consumption of building operation in China accounts for 1/3 of the total energy consumption in the country; At the same time, low energy efficiency is also one of the common problems in buildings. This huge energy consumption and waste will also have a direct impact on the economy, environmental protection and other aspects, reducing building energy consumption is imminent.

Reduce building energy consumption, that is, improve the energy efficiency of buildings. Specifically, it refers to the implementation of energy-saving standards in the planning, design, renovation and use of buildings, the use of energy-saving technologies, processes, equipment, etc., to improve the thermal insulation performance of buildings; Under the premise of ensuring the quality of indoor thermal environment, the thermal resistance of indoor and outdoor energy exchange is increased, so as to reduce the energy consumption caused by large amounts of heat consumption in heating system, air conditioning cooling and heating.
In the case of increased demand, various building insulation materials have developed rapidly, rock wool, glass wool and other products have become common choices, and under the requirements of codes and standards, such insulation materials have developed more mature, and can basically meet the requirements of building use in terms of technical parameters.
Despite these mature products as a support for reducing energy consumption, but how to achieve better results? Excellence, and constantly looking for better, more matching people's upgrading needs is also inevitable. On the other hand, in recent years, the insulation material industry is also developing and producing high-quality materials that are more in line with the current building energy conservation.
In a number of traditional insulation materials, the development speed of aerogel in recent years is visible to the naked eye. From the initial only involved in upstream aerospace and other fields, to now more commonly covered to downstream such as petrochemical, construction and other fields, while more forms and comprehensive performance of aerogel composite products.
In the field of construction, aerogel is also a big trend. After composite products such as aerogel coatings and aerogel felt have been proved to be feasible in building thermal insulation, more mature products, construction technologies and cases have been developed.
First of all, aerogel composite products have very low thermal conductivity, and all kinds of new aerogel building materials can be flexibly applied to external walls, roofs and Windows, which can effectively reduce building energy consumption.

For example, the main fields of aerogel coating cover building curtain wall, wall roof, etc., through the use of traditional water-based coating for construction, not only can follow the advantages of traditional coating construction convenient, save building space, but also increase fire insulation and other properties on the basis of traditional coating, is a new choice for external wall and roof insulation.
Aerogel felt is the most widely used among many aerogel composite products at present. Aerogel felt is used in the wall as thermal insulation. Compared with the traditional thermal insulation materials, it has the advantages of thinner quality, lower space cost and longer service life. Under the same thermal conductivity conditions, the thickness of aerogel felt is 75% thinner than that of traditional thermal insulation products.
The characteristics of low thermal conductivity bring a "qualitative leap" to the breakthrough of aerogel in the field of construction, and it is also thanks to this feature that aerogel is enough to continue to expand downstream in different fields.
In addition, there is another key word for architecture is "sound absorption". The porous and low-density structure of aerogel can greatly reduce the propagation rate of sound waves in aerogel. For example, the density of silica aerogel is 0.2g/cm3, and the propagation rate of sound waves in aerogel is 100m/s. While having thermal insulation performance and providing excellent thermal environmental quality for occupants, aerogel composite products at the same time create a living environment that is more in line with the current pursuit of people with advantages such as light weight and sound absorption. It can be seen that aerogel is a general trend in the construction field in the future.