編み込み細線を有する極細管凝縮器の伝熱特性

概要

論文の詳細を見る
Heat transfer measurements have been made for a condenser consisting of fine tubes (outside diameter : 1 mm) and laterally woven threads (diameter : 0.3 mm). Using steam as a working fluid, tests were performed at atmospheric pressure. Effects of steam velocity, noncondensable gas, and orientation of the condenser were investigated. Since the threads intensify the vapor shear and act as fins, heat transfer of the fine-tube condenser with threads is enhanced markedly compared with that for the case without threads, and the maximum heat transfer coefficient reaches 200 kW/(m^2K)(the maximum heat flux is 2 000 kW/m^2). The high heat transfer coefficient is ascribed partially to the small characteristic length of the fine tubes as well as the effects of the threads mentioned above.
一般社団法人日本機械学会の論文
1990-11-25