Теплоізоляційні вироби з невентильованими повітряними прошарками, екранованими тепловідбиваючим матеріалом

Abstract

Thermal insulation products and structures with unventilated air layers are multilayer structures. They consist of a rigid frame with inclusions. Studies show that when heat passes through 1 m3 of the vertical air layer in one hour at a temperature difference on its surfaces of 5 ° with a layer thickness of 10 to 200 mm, the share of thermal conductivity is 38-42%, convection 2-20%, radiation 60 -79%. Unventilated air layers work effectively at a thickness of 6-10 mm, provided there is no convective movement inside, which occurs due to the temperature difference on the surfaces of the layer. The simulation of the study of the passage of heat flow through the foil thermal panels on the basis of the method of correlation-regression analysis involves the construction of linear models of its dependence on the set of input factors of each of its structural units. The simulation showed that all the obtained coefficients of determination are statistically significant, and therefore, the obtained regression equations are statistically reliable. This means that they can be used for forecasting and further analysis. Developed thermal insulation facade tiles made of extruded polystyrene foam and polymer sand material with the use of screen insulation with unventilated air layers, the use of which will achieve cost-effective thermal protection of the outer wall. Analysis of technical and economic factors of insulation of external fences showed that the implementation of energy saving measures by insulating the enclosing structures of the building will pay off in 3.6 years. The process of production of polymer sand tiles is considered, it is found that the volume of one product of a given shape is 0.054 m3, the volume of cavities inside the tile is 0.005 m3. The design of this tile will reduce the amount of raw materials per product by 9.3%.