Who says southern buildings don't need external walls to keep warm? Maybe you should read this article.

Building energy conservation refers to the rational use and efficient use of energy in the process of building materials production, construction and construction of buildings and structures, and the continuous improvement of energy utilization, as far as possible to reduce energy consumption.
although building energy conservation is developing rapidly in China, people sometimes fall into some misunderstandings, such as southern buildings do not need external wall insulation? Below this article, Zhuobao's professional and technical personnel will give you detailed answers.
Prospects
Building energy conservation continues to develop, external wall insulation technology has been vigorously promoted
With the continuous development of building energy conservation, building enclosed structure insulation technology is also increasingly perfect, especially the external wall insulation technology has been developed by a considerable number of years, and become an important building energy-saving technology . In the mid-to-late 1990s, external wall insulation began to be used in large areas in the north. Since 2005, the country has been enforcing the 50% energy-saving standard for buildings. "Regulations on energy-saving management of civil buildings" came into effect on January 1, 2006, and the insulation technology of external walls has entered a period of high-speed development.
Misunderstanding
Myth One: External wall insulation only applies to northern buildings
Some experts even put forward "in the southern region, the outer wall insulation is not the focus of building energy conservation, not good sometimes to increase the energy consumption of buildings" point of view, openly questioned the southern building to do external wall insulation effect.
experts believe that "there is a temperature difference on both sides of the building wall, so add insulation materials, do not let the temperature difference cause heat transmission, so that energy saving." "But the further south, the smaller the temperature difference on neither side of the building wall, the smaller the temperature difference, the less need for too much insulation, not even insulation." For example, in winter, the northeast minus 28 degrees C, 20 degrees C in the house, then the temperature difference is 48 degrees C, to Shanghai, Nanjing, this area temperature difference is less than 15 degrees C, and then to south China is even smaller. The temperature difference in the north is big, the insulation can save a lot of energy, but the temperature difference in the south is small, what needs to be done insulation? Myth
Myth 2
The shade and cooling ventilation of southern buildings is more important than insulation
Some experts think: "In the south in summer, the roof and exterior walls are very hot by the sun, if this time the way to shade, such as the roof plus a shed, then the sun can not shine directly on the surface, the temperature will not go up." In addition, ventilation and cooling can effectively counteract the sun's heat." The experts concluded that in the south, shade and cooling of buildings are more important than insulation. At the same time, experts also used such a metaphor, "in the sun is wearing down jackets or umbrella cool?" Of course it's cool to take a dry umbrella and wear a T-shirt. The same is true for buildings, with shade and thermal ventilation more important than insulation. "
Truth
Southern building exterior wall insulation effect is greater than shade and ventilation
In practical use, shade is generally used for windows, glass curtain wall and other permeable parts, and building energy-saving design standards for window wall ratio is required, glass curtain wall is recognized as a high-energy building form, so, the external wall insulation is the main form of building energy-saving. With the continuous improvement of building energy-saving standards, the insulation technology of building enclosed structural materials is also increasingly strengthened, especially the external wall insulation technology, in the building energy-saving technology has an increasingly important position.
Moreover, air ventilation, friends in the south should know that the south is not as long as imagined ventilation time, and people have become more and more dependent on air conditioning, objectively lead to the opening of air conditioning time will be very long, naturally to do a good job of external wall insulation. The insulation of the exterior wall reduces the heat transfer inside and outside, which has an objective effect on reducing the energy consumption of air conditioning.
Health
Southern buildings need external wall insulation, the main purpose is insulation
the Ministry of Construction mandatory building energy-saving norms and leading the promotion of the form of external wall insulation, are carried out on the basis of full investigation and practical experience. The problem with these different sounds is that some experts confuse the concept of insulation with insulation.
building insulation, refers to the enclosing structure to prevent indoor to outdoor heat transmission.
building insulation refers to the enclosing structure to prevent outdoor heat transmission to the indoor and impedance of solar radiation.
principle of thermal insulation structure of the outer wall is to reduce the thermal bridge of the enclosing structure and solve the thermal bridge effect, the most direct manifestation is the winter insulation and summer insulation. So "external wall insulation" actually covers "insulation" and "insulation" two functions. The reasonable explanation of "exterior wall insulation structure" should be "the construction structure used to maintain the comfortable temperature environment in the room, and achieve the goal of building energy saving". Understanding the concepts of "insulation" and "insulation", we understand that the main purpose of insulation of the exterior walls of southern buildings is insulation. In addition, solar radiation can heat the exterior wall surface to 70 degrees C, the formation of heat energy accounted for 80 to 90% of the wall heat transmission, far greater than the indoor and outdoor temperature difference generated by the heat energy, the importance of external wall insulation is very obvious.
, the analogy of whether to wear a down jacket or an umbrella under the sun is not appropriate. People are different from houses, people are heat-inducing, and houses are heat-conducting bodies. In summer, people umbrella can reduce solar radiation, increase air flow, body feeling will be more comfortable. However, if the old man who sells ice sticks wants them to last longer and melt more slowly, it's obviously better to use a heatbox, plus a down jacket. This scenario is compared to the use of air conditioning in buildings. Building energy saving, or put on a down jacket for the outer wall is appropriate.
, out of the misunderstanding, the effective implementation of building energy conservation, southern buildings also need to do "insulation."
as a building energy-saving external wall insulation (decorative energy-saving) system service provider, ZhuoBao Green Construction has the industry's top laboratory and development team, successfully developed a series of exterior wall decoration energy-saving integrated products. Comprehensive experimental ability, scientific and reasonable application of technology casting high-quality products, building energy-saving development of the cause of the mainstay.
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