Thermal response of porous media cooled by a forced convective flow
- Thermal response of porous media cooled by a forced convective flow
- 백진욱; 강병하; 현재민
- 다공물질; 대류열전달; 압력손질; 냉각응답; 열방출
- Issue Date
- VOL 10, NO 5, 600-609
- The experimental investigation of thermal response characteristics by the air flow through the porous media has been carried out. The packed spheres of steel or glass were considered as the porous media in the present study. Temperature distributions of the fluid in the porous media as well as pressure drops through the porous media were measured. The transient temperature variations in the porous media are compared favorably with the analytical results in the high Reynolds number ranges. However, in the low Reynolds number ranges, the experimental data deviate from the analytical results, due to the dominant heat conduction penetration to the upstream direction, which is not considered in the analytical model. The cool-down response of porous media is found to be dependent upon the specific dimensionless time considering the material property and air velocity. The heat discharge process is recommended to be operated until a certain time, considering the cost efficiency.
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