PLANT FOR PRECISION MEASUREMENT HEAT BESKONVEKTSIONNYH permeability materials at temperatures close to room

摘要

The invention relates to the field of measuring equipment and can be used to for examination and analysis of thermal protective properties of materials for the building industry and light industry in natural environments at temperatures from -20 to + 40 ° C. Geometry and construction of the installation is such that the contribution from convection in the heat transfer through the sample is equal to zero, while the contributions from the conduction and thermal radiation from the controlled and measurable with reasonable accuracy of ~ 1%, the effect of radiation scattering material is immaterial. Therefore, the available studies heterogeneous in terms of fiber, foam and composite materials. A device portable computerized model for measuring the thermal conductivity of the materials in the range of 0.005 to 5 W / (m · K) and the penetration depth of the heat radiation materials in the range of 0.5 to 50 mm. The technical result consists, firstly, in the possibility of measuring the value of the power flow passing through the sample (irrespective of its inner structure) with a predetermined temperature difference applied thereto, and secondly, the possibility of measuring the characteristics of the material, determining its thermal permeability. 4 yl.