Southern Exterior Wall Insulation Analysis And Research,

The level of energy resources per capita in China is less than half of the world, but economic development depends on energy development. In order to achieve sustainable development strategy in China, the government of the People's Republic of China has issued the basic national policy that it is compulsory to keep building energy-saving of 50% and it is suggested to promote building energy-saving of 65%. This article focuses on presenting the current status of wall insulation in the Sunan region , analyzing theories of various insulation systems, constructions as well as advantages and disadvantages. Moreover, through ANSYS finite element software, a variety of insulation systems are analyzed and compared. Main results are as follows:(1) There are three main forms about wall insulation, including the interior insulation of the walls, sandwich insulation of the walls and the exterior insulation of the walls, and the use of exterior insulation has more good results compared with the others..(2) In the Sunan region , planking category insulation materials and mortar category insulation materials are usually adopted on external walls of the exterior insulation system. As far as planking category is concerned, there are two plates including expanded polystyrene foam (EPS boards) and extruded polystyrene foam (XPS board). In the same environmental conditions,the insulation performance of XPS board is better than the insulation performance of EPS board, but comprehensive about cost and effect of insulation, the construction corporations are inclined to use EPS boards.(3) As to EPS-insulation system, EPS thin-plastering insulation systems and insulation systems composed of EPS boards without networks are superior to those composed of EPS boards with network systems and mechanical fixed systems in the insulating effect.(4) For the same type of insulation systems, increasing the thickness of insulation materials, to a certain extent, can improve the insulation effect, but the effect is a little .(5)The insulation effect of insulation mortar is better than that of the EPS thin-plastering insulation system. According to the calculated results, the buildings with insulating systems have a good effect on energy-saving...