Design and heat transfer analysis of a compound multi-layer insulations for use in high temperature cylinder thermal protection systems

摘要: Thermal protection systems are very essential for high temperature thermal conductivity measurement system to reduce the heat loss environment at range of 600–1800 K. A compound multi-layer insulations structure which composed inner carbon fibrous materials and outer alternately arranged alumina reflectivity foils is proposed use in cylinder systems. coupled conductive radiation governing equations presented transfer analysis structure. The finite volume method discrete ordinate used solve equations. optimization investigated by considering pressure gas, density materials, number reflective foil layers emissivity foils. results show that has best insulation performance when gas below 0.01 kPa, 180 kg m−3, 256 kg m−3 39. In addition, much better lower.