Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Optimum Design of Liquid Cooling Heat Exchangers and Cooling-Fluid Distributors for a Amplifier Cabinet of Telecommunication Equipment

통신장비용 앰플리파이어 액체냉각장치 및 냉각유체 분배기의 최적설계 및 성능특성

  • Yun, Rin (Department of Mechanical Engineering, Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University) ;
  • Kim, Hyun-Jong (Digital Appliance Research Lab., LG Electronics) ;
  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National Unigersity) ;
  • Cheon, Deok-Woo (Research Institute, ILSHIN Temperature Humidity Engineering)
  • Published : 2006.01.01
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Abstract

Three liquid cooling heat exchangers for cooling of telecommunication equipment were designed and their cooling performances were tested. The liquid cooling heat exchangers had twelve rectangular channels $(5\times3 mm)$ 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 400 W, while flow rate and inlet temperature of working fluid were altered from 1.2 to 4.0 liter/fin and from 15 to 3$30^{\circ}C$, 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 designed, and their distribution performances of working fluid were numerically and experimentally investigated. The distributor of the 2-3-2 type showed superior distribution performance compared with those of the 4-3 type distributor.

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References

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