Performance Comparison of Liquid-Cooling with Air-Cooling Heat Exchangers Designed for Telecommunication EquipmentPerformance Comparison of Liquid-Cooling with Air-Cooling Heat Exchangers Designed for Telecommunication Equipment
- Other Titles
- Performance Comparison of Liquid-Cooling with Air-Cooling Heat Exchangers Designed for Telecommunication Equipment
- Authors
- 전종욱; 김용찬; 최종민; 허재혁; Hoon Kang
- Issue Date
- 2008
- Publisher
- 대한설비공학회
- Keywords
- Telecommunication equipment; Heat flux; Liquid cooling; Air cooling; Heat exchanger
- Citation
- International Journal of Air-Conditioning and Refrigeration, v.16, no.2, pp.64 - 69
- Indexed
- KCI
OTHER
- Journal Title
- International Journal of Air-Conditioning and Refrigeration
- Volume
- 16
- Number
- 2
- Start Page
- 64
- End Page
- 69
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/125012
- ISSN
- 2010-1325
- Abstract
- Electronic and telecommunication industries are constantly striving towards miniaturization of electronic devices.
Miniaturization of chips creates extra space on PCBs that can be populated with additional components, which decreases
the heat transfer surface area and generates very high heat flux. Even though an air-cooling technology for
telecommunication equipment has been developed in accordance with rapid growth in electrical industry, it is confronted
with the limitation of cooling capacity due to the rapid increase of heat density. In this study, liquid-cooling
heat exchangers were designed and tested by varying geometry and operating conditions. In addition, air-cooling heat
exchangers were tested to provide performance data for the comparison with the liquid-cooling heat exchangers. The
liquid-cooling heat exchangers had twelve rectangular channels with different flow paths of 1, 2, and 12. Silicon rubber
heaters were used to control the heat load to the heat exchangers. Heat input ranged from 293 to 800W, and inlet temperatures
of working fluid varied from 15 to 27℃. The heat transfer coefficients were strongly affected by flow conditions.
All liquid-cooling heat exchangers showed higher cooling performance than the air-cooling heat exchanger. The
heat exchanger with 2-paths could provide more controllability on the maximum temperature than the others.
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