thermal resistance

In the current paper, there are considered the criteria for estimating the thermoelectric properties of metal glasses (MG) on suitability for thermometry. It is revealed that a principle of choice of thermoelectric materials based only on criteria is not quite efficient. It needs to examine also their mechanical durability, thermal, radiating, and anticorrosive properties, etc. More complete consideration proves that the use of MGs in thermometry is rather expedient.

The article examines the effect of thermal insulation from autoclaved aerated concrete on the energy characteristics of a single-family house. Analysis of mathematical models of energy characteristics of external enclosing structures of buildings depending on the thickness of AEROC autoclaved concrete products according to the criteria of heat loss shows that the thermal resistance value of 7.11 m2K/W and the heat transfer coefficient of 0.141 W/(m2K) are achieved using the wall block AEROC D 300 and AEROC Energy thermal insulation panel with a thickness of 200 mm.

The article presents the designs of a number of devices for measuring the thermal conductivity of solids developed using the new methodological approaches proposed by the authors, which enable measurements in a wide range of thermal conductivity values with better accuracy. The proposed approaches rely on the principle of invariance, which consists in ensuring the compensation of the effect of various non-informative parameters on the measurement result.

The influence of structural and thermal parameters of window structures on energy consumption in a house of a residential type is analyzed in this article from the standpoint of providing the required level of natural lighting and minimizing of transmission losses. It was shown, that modern buildings are characterized by a much larger proportion of the area of window structures, which requires a special analysis of the effect of translucent enclosures on the energy performance of buildings.

Bifunctional halogen-containing oligomers of various composition and structure were synthesized. Simple and complex aromatic block copolyethers of constructional and film purpose were obtained by various methods of polycondensation. Physical and chemical properties of obtained block copolyethers were studied.