| Title |
Optimization of Nozzle Arrangement in a Liquid Direct Contact Cooling System:Constant Inlet Flowrate Analysis |
| Keywords |
Showcase ; 쇼케이스 ; Zukauskas correlation ; 주카우스카스 상관식 ; Liquid direct contact cooling ; 액체식 직접 접촉 냉각 |
| Abstract |
For the design of a liquid direct contact cooling system, thermal and hydraulic analysis has been carried out. Well-known Zukauskas correlations are used to estimate the Nusselt number between the liquid refrigerant columns and the inlet airflow. The inlet air velocity is set at a typical value used in an actual showcase. For a constant column number, the best nozzle arrangement is determined for the maximum heat transfer. Heat transfer in-creases as the transverse pitch of the refrigerant column decreases. Among all the cases dealt with in the present study, the staggered arrangement with 140-columns of 14×10 shows the best thermal performance and the expected temperature drop is 27.8℃. The effect of down-stream refrigerant columns on the overall thermal performance is investigated as well. |