| Project/Area Number |
10650229
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Thermal engineering
|
|---|
| Research Institution | Ichinoseki National College of Technology |
|---|
Principal Investigator |
SASAKI Seizi Ichinoseki National College of Technology Department of Mechanical Engineering, Professor, 機械工学科, 教授 (80042183)
|
|---|
| Project Period (FY) |
1998 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
|
| Budget Amount *help |
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2000: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1999: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
|
|---|
| Keywords | Heat transfer / Multiple measurement / Thermophysical property / Specific heat / Thermal diffusivity / Total hemispherical emittance / Transient method / Calorimetric technique / 指向放射率 / 石英ガラス / 非定常熱量法 / パイレックスガラス |
|---|
| Research Abstract |
There are very few investigations on the measurements of total hemispherical emittance of non-metallic materials, in contrast to those on metallic materials. In this investigation, a method for simultaneous measurement of total hemispherical emittance, specific heat and themal diffisivity of non-metallic materials by means of a transient method has been developed.
On measurements of thermophysical properties of non-metallic materials, there arises a problem of the thermal garadient produced in a specimen used. An improved transient calorimetric technique to reduced the thermal gradient is proposed in this study.
Glass sheets semi-transparent for radiation are selected as a measured by the proposed technique and their results are presented with the thickness as parameter. The corner effect of the specimens due to the local hemispherical emittance distribution on the measured total hemispherical emittance is estimated. It is shown that the proposed technique is very useful for measuring total hemispherical emittance, specific heat and themal diffisivity of non-metallic materials.
|
