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TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2011004152
pages 533-542

INVESTIGATION OF HEAT CONDUCTIVITY OF POROUS THERMAL INSULATION MATERIALS AT HIGH TEMPERATURES

Leonid Yakovlevich Paderin
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky Str. 1, Zhukovsky, 140180, Russia
Boris Viktorovich Prusov
Central Aerohydrodynamic Institute (TsAGI), Russia
Oleg Dmitrievich Tokarev
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky Str. 1, Zhukovsky, 140180, Russia

ABSTRACT

This paper is dedicated to the improvement of the method and facility modernization for increasing the maximum temperature in investigations of heat conductivity of porous thermal insulated materials. In the framework of facility modernization a new measuring device is developed using modern high-temperature materials. These actions permitted us to increase the maximum temperature of the test samples at the measurements of the effective heat conductivity coefficient from 1500 K up to 1825 K. The measurements were performed under vacuum and gaseous media conditions in the pressure range of p =1− 105 Pa. The test results are presented as the temperature and barometric functions of effective heat conductivity of the investigated materials.