熱放出割合を独立変数とする相似曲線を用いて求められた潜熱蓄熱器の凝固過程における熱通過有効度

概要

論文の詳細を見る
Shamsundar's method, in which heat exchanger effectiveness of a latent heat storage unit is calculated using a similarity curve representing the relationship between similarity function and frozen fraction, has a drawback that release of sensible heat is always neglected after the frozen fraction at the inlet of the storage unit becomes unity. On the basis of the idea that the release of sensible heat will be taken into account if the heat release fraction is used as an independent variable instead of the frozen fraction, a new method for calculating the heat exchanger effectiveness utilizing the similarity curve of the heat release fraction has been proposed and developed. The comparison between numerical and experimental results on a concentric-circular-tube-type storage unit with n-eicosane as a phase change material shows that the new method is especially advantageous in the solidification process after the inlet frozen fraction exceeds unity. In the similarity curve of the heat release fraction, however, the similarity rule is less applicable than in that of the frozen fraction.
一般社団法人日本機械学会の論文
1993-08-25