| Title |
Pressure Loss and Forced Convective Heat Transfer in an Annulus Filled with Aluminum Foam |
| Keywords |
Annulus flow ; 환형관 유동 ; Nusselt number ; Nusselt수 ; Friction factor ; 마찰계수 ; Permeability ; 투과율 ; Aluminum foam ; 발포 알루미늄 ; Heat flux ; 열유속 |
| Abstract |
An experimental investigation has been carried out for aluminum foam heat sink inserted into the annulus to examine the feasibility as a heat sink for high performance forced water cooling in the annulus. The local wall temperature distribution, inlet and outlet pressures and temperatures, and heat transfer coefficients were measured for heat flux of 13.6, 18.9, 25.1, 31.4kW/m2 and Reynolds number ranged from 120 to 2000. Experimental results show that the friction factor is higher than clear annulus without aluminum foam, while the significant augmentation in Nu is obtained. This technique can be used for the compactness of the heat exchanger. |