三次元リブ付管の管内強制対流熱伝達の促進

概要

論文の詳細を見る
Heat transfer to water slowing inside the tubes having three-dimensional ribs was investigated experimentally. The ribs are composed of primary ribs and rows of dents intersecting the ribs at certain angles or, they are composed of primary ribs and rows of dents intersecting the ribs at certain angles or, they are reduced to the rows of protuberances by employing a different manufacturing technique. Among the tubes tested, the one having primary ribs of 0.5 mm high and dents of 0.5 mm deep from their crests spiralling with respect to the tube axis at angels of 30°and -30°, respectively, shows the most favorable performance of high heat transfer rate and relatively low pressure drop. When applied to the design of a shell-and-tube heat exchanger, the above ribs and also the protuberances are effective in reducing the heat exchanger volume.
社団法人日本機械学会の論文
1985-01-25