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Heat Transfer of Mesh-wick Heat-pipes : Bottom Heat Mode
https://jaxa.repo.nii.ac.jp/records/31321
https://jaxa.repo.nii.ac.jp/records/313217c7ac443-1874-46f1-ad0b-864c6b5ed397
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA0033590.pdf (812.6 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||||
| タイトル | ||||||||||
| タイトル | Heat Transfer of Mesh-wick Heat-pipes : Bottom Heat Mode | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 著者 |
IKEDA, Yoshio
× IKEDA, Yoshio
× ONUMA, Sadayuki
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| 著者所属（英） | ||||||||||
| en | ||||||||||
| Nippon Institute of Technology | ||||||||||
| 出版者 | ||||||||||
| 出版者 | 宇宙科学研究所 | |||||||||
| 出版者（英） | ||||||||||
| 出版者 | Institute of Space and Astronautical Science | |||||||||
| 書誌情報 |
en : The Institute of Space and Astronautical Science report. S.P. : The Proceedings of the Symposium on Mechanics for Space Flight 1987 巻 6, p. 61-76, 発行日 1988-03 |
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| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | A heat-pipe in which the working fluid circulates by gravity need not contain a wick. this type of heat pipe can be examined as a thermo-siphon. For better moistening inside the evaporating zone and improvement of the limit of flooding or entrainment, wicks of groove type are often used. In the present study, the performance of the metal wick of the copper-ethanol heat-pipe is examined by investigating the effect of inclination angle and volume of enclosed fluid on thermal resistance. In modeling the thermal resistance of the heat-pipe, it is assumed that, in the evaporating zone, the surplus fluid beyond the volume required for a complete circulation with full depth of fluid film is stagnant and the total thickness of the wick contributes the thermal resistance and that, in the condensation zone, the equivalent wick thickness to the depth of circulating fluid film accounts for the thermal resistance. In calculating the porosity, permeability and effective thermal conductivity of the wick, the equations including the normalized clearance are used. Since heat-pipes generally contain surplus fluid beyond the porous volume of the wick, the depth calculated by the equations of the Nusselt's condensation film theory is added to the depth of fluid film in the range beyond the wick capacity. The agreement between the calculated and measured differential temperature is good. The maximum heat transfer is attained at around 20 degrees of inclination angle, as is the case with thermo-siphons. The calculated wick capacity in the upright position is close to the measured value. There is no large discrepancy from the value obtained by the Katto's equation for the critical heat transfer in the limited water canal, except that the volume of enclosed fluid becomes larger. | |||||||||
| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0288-433X | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA10455137 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: SA0033590000 | |||||||||
