HEAT TRANSFER PIPE OF OPEN RACK TYPE VAPORIZING DEVICE, AND OPEN RACK TYPE VAPORIZING DEVICE COMPRISING HEAT TRANSFER PIPE

To restrain ice accretion on an outer surface of a heat transfer pipe and improve vaporizing performance at the same time.SOLUTION: A heat transfer pipe 2 of an open rack type vaporizing device 1 comprises a heat transfer pipe body 21, and a heat transfer enhancement body 3 arranged in a pipe of the heat transfer pipe body. The heat transfer enhancement body is constituted in such a manner that a plurality of first passages 25 and a plurality of second passages 27 are formed in the pipe of the heat transfer pipe body. The respective first passages are in contact with an inner surface of the heat transfer pipe body, and has higher vaporizing performance than the second passages. The plurality of first passages are regularly arranged at intervals in a circumferential direction.SELECTED DRAWING: Figure 2 【課題】伝熱管の外表面への着氷を抑制することと、気化性能の向上とを両立する。【解決手段】オープンラック式気化装置１の伝熱管２は、伝熱管本体２１と、伝熱管本体の管内に配設される伝熱促進体３と、を備える。伝熱促進体は、伝熱管本体の管内を、複数の第１通路２５と、複数の第２通路２７とを形成するよう構成される。各第１通路は、伝熱管本体の内表面に接しかつ、前記第２通路よりも気化性能が高い。複数の第１通路は、周方向に間隔を空けて規則的に配置されている。【選択図】図２