1 0 0 0 OA Excelによる熱流体シミュレーションと可視化
- 著者
- 富村 寿夫 藤井 丕夫 小別所 匡寛 鳥尾 倫彦 越後 亮三
- 出版者
- 九州大学
- 雑誌
- 九州大学機能物質科学研究所報告 (ISSN:09143793)
- 巻号頁・発行日
- vol.7, no.1, pp.15-20, 1993-09-30
The heat transfer characteristics of a gas-to-gas heat exchanger with permeable porous media have been investigated theoretically and experimentally. It is shown that in the case of relatively low working gas temperatures, i. e. 750~900[K], the temperature distributions of the porous media are not affected by the emissive or absorptive powers of the working gas. The values of the overall coefficients of heat transfer are estimated, and even in the relatively low temperatures, the present heat exchanger is shown to have almost the same values as conventional high performance gas-to-gas heat exchangers. Effects of the emissivity and transmissivity of a separating wall on heat transfer are also examined, and by using a black or transparent separating wall the overall coefficients of heat transfer are suggested to increase by about 1.5 or 2.3 times, respectively.
1 0 0 0 OA ガスエンタルピとふく射エネルギ間の効果的変換方法 : ガスふく射と入射ふく射の影響
- 著者
- 越後 亮三 富村 寿夫 吉澤 善男 陣内 秀信
- 出版者
- 九州大学
- 雑誌
- 九州大学機能物質科学研究所報告 (ISSN:09143793)
- 巻号頁・発行日
- vol.2, no.1, pp.53-66, 1988-06-30
A numerical analysis has been performed on combined convective and radiative heat transfer in a circular tube flow system with porous medium, taking account of gaseous radiation and incoming radiations. Results for temperature and radiative heat flux distributions are presented and compared with those of a non-radiating gas. Extensive discussion is also given on the influences of those radiations on the recaptured energy at tube inlet section.
1 0 0 0 OA 対流および伝導・ふく射が共存する複合熱伝達
- 著者
- 藤井 丕夫 富村 寿夫 張 興
- 出版者
- 九州大学
- 雑誌
- 九州大学機能物質科学研究所報告 (ISSN:09143793)
- 巻号頁・発行日
- vol.5, no.2, pp.189-200, 1992-03-31
To utilize effectively natural resoureces of the solar, geothermal and ocean energy, and to develop new energy systems of hydrogen and bioenergy, it is important to understand the heat and mass transfer phenomena in some elementary equipment constructing the system. The heat transfer in such equipment is generally a complicated phenomenon combined with conduction, convection and radiation. The phenomenon is, therefore, difficult to be predicted from a simple combination of individual type of heat transfer. Herein, some related subjects are described in detail, particularly with respect to the studies of the highly efficient use of radiative energy through porous media and the natural convection air cooling of electronic equipment.