The hottest energy-saving glass will become the ma

2022-07-16
  • Detail

Energy saving glass will become the mainstream of building glass industry in the future

low radiation glass (ILE) and multifunctional coated glass (IMF), also known as insulating glass, have the maximum solar transmittance and the minimum reflection coefficient. It can allow 80% of visible light to enter the room and be absorbed by objects, and can retain more than 90% of the long waves radiated by indoor objects indoors, greatly improving the energy utilization rate. At the same time, it can selectively transfer solar energy and transfer most of the heat radiation energy into the room, which can play a role in heat preservation and energy conservation in heating buildings. Compared with ile glass, IMF glass has the same principle in terms of heat conduction control, but it is superior in reducing the entry of heat energy. In addition, low radiation glass and multi-functional glass have selectivity for sunlight transmission of different frequency spectrums, which can filter out ultraviolet rays, avoid fading of indoor furniture, pictures, artworks, etc. due to ultraviolet radiation, and can also absorb part of visible light, playing the role of anti glare

in addition, there is another kind of coated glass that can prevent solar radiation and outdoor thermal radiation in summer. In winter, it mainly blocks indoor thermal radiation. On the basis of the low radiation glass and the increasingly large glass performance of the "purchasing army", the thermal reflective glass performance is taken into account. On the premise of retaining the original low radiation film, By changing the thickness of other film layers, the transmittance of sunlight (especially near-infrared ray) is appropriately reduced, and the reflection and absorption of sunlight (especially near-infrared ray) are improved. The emissivity is low and the shading coefficient is small

each of the above energy-saving glasses has its own thermal advantages and disadvantages. It must be optimized and selected according to the geographical and climatic characteristics, building orientation, level and economic consumption level of each region. For example, the orientation and position of high-rise buildings or buildings with abundant solar radiation should use heat absorbing glass to give full play to the heat insulation function of glass and will not have a great impact on indoor light; In severe cold and cold climate areas, low radiation glass and multi-functional coated glass should be selected, preferably controlled within 5000 words, so as to give full play to the glass insulation function and reduce the indoor heating load; In warm winter and hot summer areas, anti radiation glass should be selected to give full play to the thermal insulation function of glass and reduce the indoor air conditioning load in summer. For example, the use of heat absorbing glass in the direction and position of the building at the lower level or where the sun cannot radiate, not only has no obvious heat insulation effect, but also affects the indoor light and increases the lighting cost; If anti radiation glass is used in severe cold and cold climate areas, solar energy cannot be effectively used, and heating costs will be increased; In warm winter and hot summer areas, the selection of low radiation glass and multi-functional coated glass will increase the indoor temperature and increase the cost of air conditioning. At the same time, although coated glass has a certain energy-saving effect, it exists in the form of hollow glass. You can visit our machines locally. The combination of heat absorbing glass or anti radiation glass and low radiation glass is the best match. The solar radiation is absorbed by the heat absorbing glass and becomes heat energy. Its radiation changes into long wave radiation. The long wave radiation is reflected and isolated by the low radiation glass and cannot enter the room. In the hot areas of southern China, the outer glass of the insulating glass is coated with heat reflection film, and the inner glass is coated with low radiation film, which can not only reflect the solar radiation heat radiated on the glass, but also significantly reduce the heat transfer capacity of the insulating glass heat transfer glass, which plays a very significant role in improving the indoor thermal environment and reducing the air conditioning load

it should be noted that the above energy-saving glass is much more expensive than ordinary single glass. Among them, the hollow glass is increased by about 40 ~ 80 yuan per square meter, the vacuum glass is increased by about 200 ~ 400 yuan per square meter, and the hollow coated glass is increased by about 100 ~ 300 yuan per square meter (depending on the variety, performance and thickness of the membrane). However, the energy-saving effect of using energy-saving glass is very significant, with high cost performance. When selecting, full consideration should be given to the energy-saving economic effect obtained from long-term use, and the price factor should not be taken into account. The energy-saving effects of glasses with different structures are also different

in recent years, with the development of buildings to multi-storey and high-rise buildings and the strengthening of standardized building management, the safety performance of glass has begun to be highly valued by the state

In 2003, the national development and Reform Commission, the Ministry of construction, the General Administration of quality supervision, inspection and quarantine and the State Administration for Industry and Commerce jointly issued the notice on the regulations on the administration of building safety glass. It is clearly pointed out that safety glass must be used in 11 parts of buildings that need glass as building materials. Including the outward opening windows of buildings with 7 floors and above, window glass with an area of more than 1.5 square meters or floor to ceiling windows whose bottom edge is less than 500mm from the final decoration surface

safety glass mainly refers to tempered glass, laminated glass and other glass products processed by the combination of tempered glass or laminated glass, such as safety insulating glass, which meet the current national standards. Single piece semi tempered glass (heat strengthened glass) and single piece medium wire glass do not belong to the category of safety glass. The notice puts forward a series of specific specification requirements and measures from the production, inspection, use, architectural design, management, construction, supervision, acceptance and other aspects of safety glass

it can be seen from the above discussion that with the increase of building energy-saving policies, the standardization of building management standards and the improvement of the scientific and technological level of the glass industry, energy-saving glass, safety glass and environmental protection glass will certainly shine in the future buildings and play an increasingly greater role

Copyright © 2011 JIN SHI