Currently, the thickness of exterior walls shall be appointed on the basis of strength requirements, and the necessary thermal resistance provide thermal insulation materials. Thermal insulation materials have a low coefficient of thermal conductivity. The lower this value, the better for the same thickness of its thermal resistance. For example, say that the supporting wall of concrete thickness 0.25 m is sufficient to apply the plate with a coefficient of 0.042 W / m C a total 0.12 m – and the total thermal resistance equal to 3.2 m x C / W, will be provided . In this case, the total thickness The Wall is only 0.37 m instead of 6 m. Kindle Direct Publishing may not feel the same. In terms of Thermophysics total thermal resistance does not depend on the sequence of layers of different materials in building envelopes. But in terms of diffusion water vapor must be arranged in order of decreasing thermal resistance and water vapor from outside to inside. Violation of this condition can lead to condensation of moisture in the section of the enclosing structure, and hence, to reduce its thermal resistance.
Depending on the location of a heater in the enclosing structure can be divided into three main types of insulation systems. Analyze their strengths and disadvantages. System 1. Insulation is located on the inside envelope design. With this arrangement, a heater, firstly, reduced internal surface area of the premises. Secondly, the use of this system is always entail additional costs for vapor barrier. Otherwise, on the border of the internal wall insulation and condensation of water vapor.