Thermal characteristics of double-tube two-phase thermosiphon

Journal Article · Tue Dec 31 23:00:00 EST 1991 · Heat Transfer - Japanese Research; (United States)

OSTI ID:6856032

Fukuda, K; Nakagawa, K; Okabe, K ^[1]; Hasegawa, S ^[2]; Kondah, T ^[3]; Tamura, S ^[1]

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1. Kyushu Univ., Fukuoka (Japan). Faculty of Engineering
2. Kurume Univ., Fukuoka (Japan)
3. TOA Univ. (Japan)

In a closed-thermosiphon, countercurrent flow, there results a thermal limit due to the occurrence of flooding. In this paper, a double-tube closed thermosiphon, that is, a conventional single-tube thermosiphon 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 thermosiphon. It is observed that, with an inner tube properly designed, inner natural circulation is realized and flooding is avoided. Experiments with a stainless double-tube closed thermosiphon reveal that the heating limit for this thermosiphon is greatly increased. General characteristics of this thermosiphon are presented.

• OSTI ID: 6856032
• Journal Information: Heat Transfer - Japanese Research; (United States), Journal Name: Heat Transfer - Japanese Research; (United States) Vol. 21:2; ISSN 0096-0802; ISSN HTJPAU
• Country of Publication: United States
• Language: English

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