How effectively exterior walls 'heat preservation' and 'heat'?

Suitable for indoor temperature and humidity is the basic requirement of people's life and work. For the exterior wall of building, because in most cases, the building has a temperature difference between inside and outside, especially for the cold areas need heating buildings, and some areas in winter because of the summer heat and need indoor air conditioning and cooling of buildings, walls on both sides of the temperature difference sometimes dozens of degree can be achieved. In exterior design, therefore, according to the requirements of the climatic conditions and local building use, reasonably solve the problem of building exterior wall thermal insulation, is the important content of building structure design. In general, a temperature difference between inside and outside the building. If it is necessary to keep the inside of the building thermal stability, so that the indoor temperature fluctuations within the range set of comfortable, and in order to save energy consumption, it is necessary to minimize the relay of heat flux in peripheral structure. Among them, reduce the surface area of the building periphery structure, small coefficient of thermal conductivity of materials, heat resistance materials, namely as a peripheral component architecture, is an important approach to reduce heat transfer through the peripheral structure. Outer wall heat preservation measures to improve the building exterior wall thermal insulation ability, reduce heat loss, can take measures from the following several aspects: 1. The choice of materials through the choice of materials, improve the ability of exterior wall thermal insulation, reduce heat loss. First, increase the wall thickness, delay the heat transfer process, to achieve the purpose of heat preservation; Second, choose the light materials with high porosity as exterior wall; Third, the use of composite wall heat insulation system, the formation of a variety of materials insulation and bearing problems. 2. To prevent the occurrence of the condensate wall due to temperature difference on either side of the building periphery structure, when the content of indoor and outdoor water vapor in the air is not equal to water vapour molecules from seeping through high voltage side to low voltage side, through the peripheral structure. In the process, if the temperature, dew point temperature is reached wall condensation could occur, the material will be affected with damp be affected with damp. If condensation occurred in the insulation, the insulation of the material effect would be reduced. If water vapor can't discharge, mold and material may affect its service life. Therefore, in the external wall thermal design, the influence of water vapor is not to be ignored. In general, shall be installed in the side of the higher temperature, vapor barrier, in order to prevent the water vapor into the wall, maintenance structure should discharge water vapor is blocked. Vapor barrier layer is usually made from coil or steam osmosis membrane, waterproof coating. 3. To prevent the occurrence of air infiltration exterior wall material density is not enough, usually with many small holes through them. Installed due to inaccurate or material contraction, the doors and Windows on the wall and some other components through the crack. Due to the presence of these holes and gaps, air will infiltrate into the outer wall. In order to prevent air infiltration of outside wall, generally take the following measures: is made of high wall materials, both inside and outside the wall plastering layer, strengthen the thick seam between the components processing. Windows and doors hole component of exterior wall thermal insulation measures summer burning hot area closed joint strong solar radiation. Heat transfer to the outside wall to the indoor outdoor. Indoor temperature rise, leading to overheating, influence people's work and life, and even harm people's health. Exterior wall should have enough heat insulation ability, the specific measures are: exterior wall should be light color and smooth finish, such as light color paint, coating or ceramic tile, in order to reflect the sun's radiant heat; Building ventilation room, form ventilated wall, through the air circulation take away a lot of heat; Using multiple rows of porous concrete or light aggregate concrete hollow block wall, or use composite wall; Set up a closed air interlayer with aluminum foil and air interlayer insulation.