Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Evaluation of Heat Release Performance of Swaged- and Extruded-type Heat Sink Used in Industrial Inverter

산업용 인버터에 사용되는 압입식 및 압출식 히트싱크의 방열 성능 평가

  • Kim, Jung Hyun (Division of Mechanical Design Engineering, Chonbuk National University) ;
  • Ku, Min Ye (Division of Mechanical Design Engineering, Chonbuk National University) ;
  • Lee, Gyo Woo (Division of Mechanical Design Engineering, Chonbuk National University)
  • 김정현 (전북대학교 기계설계공학부 (친환경기계부품설계연구센터)) ;
  • 구민예 (전북대학교 기계설계공학부 (친환경기계부품설계연구센터)) ;
  • 이교우 (전북대학교 기계설계공학부 (친환경기계부품설계연구센터))
  • Received : 2012.10.19
  • Accepted : 2013.02.06
  • Published : 2013.02.28
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Abstract

In this experiment, we investigated the performance of two types of heat sink, swaged- and extruded-type, used in the inverter of industrial electricity generator. The swaged-type heat sink has 62 fins, and the extruded-type has 38 fins having the same dimension as that of the swaged-type. But the extruded-type heat sink maintains the same heat transfer area by the laterally waved surface which has 1 mm in radius. As a result, the swaged- and extruded-type heat sinks released 70.7% and 63.8% of the heat incoming to the heat sink, respectively. The other incoming heat were naturally convected and radiated to the ambient. In spite of 40% decrease in number of fins, the heat release performance of the extruded-type heat sink was lowered only 6.9% than that of the swaged-type. We believe that, this shows the increment of effective heat transfer area by the laterally waved surface of fins and the better heat transfer property of the extruded-type heat sink.

본 실험에서는 산업용 발전 설비에 사용되는 인버터 내부의 압입형과 압출형 두 종류 히트싱크의 방열 성능을 평가하였다. 실험에 사용된 압입형 히트싱크는 62개의 핀을 가지고 있고, 압출형은 38개의 핀을 가지고 있으며 두 히트싱크의 외형의 크기는 같다. 반면 압출형 히트싱크는 핀의 표면에 반경 1mm의 곡률을 주어 전열면적을 압입형과 같게 하였다. 결과적으로 압입형과 압출형 히트싱크는 전체 입력열량에 대해 각각 70.7%, 63.8%를 방열하였다. 입력열량 중 나머지는 자연대류 및 복사를 통해 외부로 방열되었다. 압출형 히트싱크는 단순히 핀의 개수로 보면 압입형 히트싱크보다 40% 감소했지만, 방열양은 6.9% 만 감소하였다. 이는 표면 곡률을 통한 유효 전열면적의 증가와 압출형 히트싱크의 상대적으로 우수한 전열특성의 효과로 판단하였다.

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