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多孔物質の特性とその応用に関する研究 III
https://doi.org/10.24517/00011839
https://doi.org/10.24517/000118397478bced-c68e-4006-a0fb-dfec9f012731
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00044309-3-2-49.pdf (132.4 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-10-03 | |||||
| タイトル | ||||||
| タイトル | 多孔物質の特性とその応用に関する研究 III | |||||
| タイトル | ||||||
| タイトル | On the physical properties of porous meterials and their applications Part III : Supplement of Part II | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | |||||
| ID登録 | ||||||
| ID登録 | 10.24517/00011839 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
若島, 久男
× 若島, 久男× 桑名, 一利 |
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| 著者別表示 |
Wakashima, Hisao
× Wakashima, Hisao× Kuwana, Kazutoshi |
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| 書誌情報 |
金沢大学工学部紀要 = Memoirs of the Faculty of Technology Kanazawa University 巻 3, 号 2, p. 49-53, 発行日 1963-12-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-832X | |||||
| NCID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00044309 | |||||
| 出版者 | ||||||
| 出版者 | 金沢大学工学部 = Faculty of Technology Kanazawa University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In the proceeding report, one of the authors described about the thermal conductivities of several powders (Al₂O₃, ZnO, Si0₂, Cr₂O₃, Al and glass, etc.) in the pressure range from 760mmHg to 10-²mmHg. Now, the authors have measured the thermal conductivities of glass powders on changing air pressure from 760mmHg to 10-⁵mmHg, to explain the results of the proceeding report. (1) The thermal conductivity vs. air pressure curve is divided into two parts on the border of air pressure 10-¹~ 10-²mmHg. In high pressure, the relation between the thermal conductivity k and air pressure p is k=A log p +B where A is a constant independent of a particle diameter, B is a constant dependent on a particle diameter. In the pressure range which is lower than 10-²mmHg, the thermal conductivity of the powder is almost independent of air pressure. (2) When the packing densities are same, the smaller a particle diameter is, the smaller the thermal conductivity is. If the particle diameters are extremely small, the values of the thermal conductivities become independent of the powder materials. (3) The smaller the porespaces in powders are, the larger the thermal insulation effect becomes. As the nature of powders for vacuum thermal insulation, it is necessary that particle diameters and porespaces are small. |
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| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
