Investigation of Effective Thermal Conductivity of Porous Materials

An experimental steady state method and test apparatus were developed to measure the effective thermal conductivity of porous materials in the temperature range of T ≈ 600–2000K at environmental gas media pressures ranging from 100 to 105kPa.

The investigation of heat transfer and effective thermal conductivity of two high porous molybdenum cellular materials (material No 1 with density ρ = 800 kg/m³ and material No 2 with ρ = 300 kg/m³) were performed in a temperature range of T ≈ 600–2000K under vacuum and ambient pressure conditions.

The overall measurements uncertainties were assessed to be less than 6.5 %.