| Title |
Optimum Design of Liquid Cooling Heat Exchangers and Cooling-Fluid Distributors for a Amplifier Cabinet of Telecommunication Equipment |
| Authors |
윤린 ; 김용찬 ; 김현종 ; 최종민 ; 천덕우 |
| Keywords |
Liquid cooling heat exchanger ; 액냉형 열교환기 ; Rack mount ; 랙 마운트 ; Internal channel ; 내부 채널 ; Flow path ; 유동 통로 ; Distributor ; 분배기 |
| Abstract |
Three liquid cooling heat exchangers for cooling of telecommunication equip-ment were designed and their cooling performances were tested. The liquid cooling heat ex-changers had twelve rectangular channels(5×3mm) with different flow paths of 1, 4, and 12. Silicon rubber heaters were used to provide heat flux to the test section. Heat input was varied from 75 to 400W, while flow rate and inlet temperature of working fluid were altered from 1.2 to 4.0liter/min and from 15 to 30℃, respectively. The 4-path heat exchanger showed lower and more uniform average inner temperatures between heaters and the surface of heat exchanger than those of the others. To obtain optimal distribution of working fluid to each channels of liquid cooling heat exchangers, 2-3-2 and 4-3 type tube distributors were de-signed, and their distribution performances of working fluid were numerically and experimen-tally investigated. The distributor of the 2-3-2 type showed superior distribution performance compared with those of the 4-3 type distributor. |