잔류기체 압력에 따른 진공-MLI 단열계의 열전달 특성에 관한 해석

다국어 초록 (Multilingual Abstract)

A thermal analysis using an electrical analogy was conducted to analyze the additional effect of residual gas pressure within an insulation cavity on the heat transfer characteristics of vacuum-MLI system. As a result, it was observed that the effective thermal-conductivity increased nonlinearly with rising the pressure towards an atmospheric condition. Furthermore, the contribution of each heat transfer mode to the total heat flux within the insulation system was investigated, and their redistribution was identified. In a high vacuum environment, solid conduction and radiation were the primary contributors to total heat transfer. However, the proportion of gas conduction increased rapidly with rising pressure, and gas conduction became the dominant heat transfer mode in medium and low vacuum conditions.