ESTABLISHMENT OF THE THERMAL AND RADIATIVE PROPERTY MODEL FOR OPEN-CELLULAR MATERIALS

开孔材料热辐射性能模型的建立

• 批准号: 09650250
• 负责人: KAMIUTO Kouichi
• 金额: $ 1.66万
• 依托单位: OITA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650250/
• 关键词: OPEN-CELLULAR POROUS MATERIAL; Ni-Cr; Cordierite; EFFECTIVE THERMAL CONDUCTIVITY; CONDUCTION; RADIATION; コ-ジライト; 減衰係数; アルベド; 非対称性パラメータ; ユニットセルモデル

1) The extinction coefficients of Ni-Cr and cordierite open-cellular porouse plates were determined at room temperature using the normal transmittance fitting method, while the asymrnetry factor and the albedos of these materials were determined in a temperature range from 400 to 1000 K using the emittaice fitting method. The obtained results and other available experimental data were compared with theoretical predictions based on our cubic unit cell model for the radiative properties. It is fcmnd that the agreemeut between model predictions and experimerital results is quite satisfactory.2) The mean total effective thermal conductivities of Ni-Cr and cordierite porous plates were measured using a guarded hot plate method. In the experiment, the cold boundary was kept at about. 290 K.while the temperature of the hot boundary was varied from 370 K to 1000 1K.Combined conductive and radiative heat transfer through the porous plates was analyzed theoreticaly. using the cubic unit cell model for the thermal and radiative properties. under the conditions corresponding to the experiment. The obtained theoretical results were favorably compared with the experimental ones. Moreover, it is found that the cubic unit cell model for predicting the conductive effective thermal conductivity of a pen-cellular porous materials reproduces 79% of available experimental data with an error of less tha a *30%.

1)用法向透过率拟合法测定了室温下镍铬和堇青石开孔孔板的消光系数，用发射拟合法测定了这两种材料在400~1000K温度范围内的不对称因子和反照率。所得结果和其他可用的实验数据与基于我们的立方晶胞模型的辐射性质的理论预测进行了比较。2)用防护热板法测量了镍铬多孔板和堇青石多孔板的平均总有效导热系数。在实验中，冷边界被保持在大约。290K，而热边界温度在370~10001K之间变化。理论上分析了多孔板的导热和辐射换热。采用立方晶胞模型计算其热学和辐射性质。在与实验相对应的条件下。理论计算结果与实验结果吻合较好。此外，用立方单胞模型预测PEN-多孔材料的有效导热系数，重现率为79%，误差小于30%。

项目成果

K.KAMIUTO: "High-Temperature Radiative Properties of Open-Cellular Porous Materials" Proceedings of 11th International Heat Transfer Conference. Vol.7. 385-390 (1998)

K.KAMIUTO：“开孔多孔材料的高温辐射特性”第 11 届国际传热会议论文集。

上宇都幸一: "オープンセル状多孔体内伝導-ふく射伝熱" 第36回日本伝熱シンポジウム講演論文集. vol.1. (1999)

Koichi Kamiuto：“开孔多孔体中的传导辐射传热”第 36 届日本传热研讨会论文集第 1 卷（1999 年）。

K.KAMIUTO: "Study of Duliner's model for the thermal and radiatiul prepertion of open-cellular porous moterials" JSME International Journal (SeriesB). vol.40,No.4. 577-582 (1997)

K.KAMIUTO：“开孔多孔材料的热和辐射预演的 Duliner 模型的研究”JSME 国际期刊（系列 B）。

K.KAMIUTO: "Study of Dul'nev's model for the thermal and radiative properties of opon-cellular porous materials" JSME International Journal (Sories B). Vol.40,No.4. 577-582 (1997)

K.KAMIUTO：“针对逆孔多孔材料的热和辐射特性的 Dulnev 模型的研究”JSME 国际期刊 (Sories B)。

K.KAMIUTO: "HIGH-TEMPERATURE RADIATIVE PROPERTIES OF OPEN-CELLULAR POROUS MATERIALS" PROCEEDINGS OF 11TH INTERNATIONAL HEAT TRANSFER CONFERENCE. VOL.10. 385-390 (1998)

K.KAMIUTO：“开孔多孔材料的高温辐射性能”第 11 届国际传热会议论文集。