Abstract
The experimental setup for the investigation of heat transfer and fluid flow in metal foam filled tubes was built. Three tubes filled with different stainless steel foam were under investigated. The pore density of the metal foam is 10 PPI, 30 PPI and 70 PPI. The effects of Reynolds number, the inlet temperature as well as the pore density on the outer wall Nusslet number were analyzed in detail. The results showed that the heat transfer rate is enhanced in metal foam filled tubes compared to the smooth tube and the heat transfer rates in 30 PPI and 70 PPI metal foam filled tubes are higher than the 10 PPI metal foam filled tube. Under the present working condition, the Reynolds number of the inside flow has little effect on the outer wall Nusslet number and the outer wall Nusslet number increased with the increase of the inlet temperature. The comprehensive performance evaluation criteria of the three metal foam filled tubes is higher than 1 and is little affected by the Reynolds number.
| Original language | English |
|---|---|
| Pages (from-to) | 155-158 |
| Number of pages | 4 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 38 |
| Issue number | 1 |
| State | Published - 1 Jan 2017 |
Keywords
- Experimental investigation
- Heat transfer enhancement
- Metal foam