極低温における熱ふく射に関する実験研究

概要

論文の詳細を見る
Heat transfer due to thermal radiation at cryogenic temperatures was experimentally studied. The purpose of the study was to collect practical data and to establish the prediction method for heat transfer. Heat flux between various radiation surfaces was measured by the evaporation loss method. There were two sets of temperatures between radiation surfaces : one was between room temperature and liquid nitrogen temperature, the other was between liquid nitrogen temperature and liquid helium temperature. Effective emissivities obtained by measurements were well explained by using the total hemispherical emissivity of the cold surface at a "warm" temperature in place of that of the cold surface at a "cold" temperature in the "diffuse-gray" approximation.
一般社団法人日本機械学会の論文
1990-01-25