密閉二重管形二相熱サイフォンの伝熱特性

抄録

In a closedthermosyphon, countercurrent flow which emerges in it results in a thermal limit due to the occurrence of flooding. In this paper, a "double tube closed thermosyphon, i.e. a conventional single tube thermosyphon with an inner tube inserted in which condensate liquid is designed to flow down is proposed. Visual observation experiments of the inside flow are carried out with a single-tube glass thermosyphon. It is observed that with an inner tube properly designed, the inner natural circulation is realized and flooding is avoided. Experiments with a stainless double-tube closed thermosyphon reveal that the heating limit for this thermosyphon is greatly increased. General characteristics of this thermosyphon are presented.