Heat Transfer Capacity of Lotus-Type Porous Copper Heat Sink

• CHIBA Hiroshi

  Mechanical Systems Department, Adv. Tch., R&D Cent., Mitsubishi Electric Corporation

• OGUSHI Tetsuro

  Mechanical Systems Department, Adv. Tch., R&D Cent., Mitsubishi Electric Corporation

• NAKAJIMA Hideo

  The Institute of Scientific and Industrial Research, Osaka University

• IKEDA Teruyuki

  The Institute of Scientific and Industrial Research, Osaka University

Abstract

Lotus-type porous copper is a form of copper that includes many straight pores, which are produced by the precipitation of supersaturated gas dissolved in the molten metal during solidification. The lotus-type porous copper is attractive as a heat sink because a higher heat transfer capacity is obtained as the pore diameter decreases. We investigate a fin model for predicting the heat transfer capacity of the lotus-type porous copper. Its heat transfer capacity is verified to be predictable via the straight fin model, in which heat conduction in the porous metal and the heat transfer to the fluid in the pores are taken into consideration by comparison with a numerical analysis. We both experimentally and analytically determine the heat transfer capacities of three types of heat sink: with conventional groove fins, with groove fins that have a smaller fin gap (micro-channels) and with lotus-type porous copper fins. The conventional groove fins have a fin gap of 3mm and a fin thickness of 1mm, the micro-channels have a fin gap of 0.5mm and a fin thickness of 0.5mm, and the lotus-type porous copper fins have pores with a diameter of 0.3mm and a porosity of 0.39. The lotus-type porous copper fins were found to have a heat transfer capacity 4 times greater than the conventional groove fins and 1.3 times greater than the micro-channel heat sink under the same pumping power.

Journal

• JSME International Journal Series B

  JSME International Journal Series B 47 (3), 516-521, 2004

  The Japan Society of Mechanical Engineers

Keywords

• Porous Media
• Lotus-Type Porous Copper
• Fin Efficiency
• Heat Transfer Capacity
• Heat Sink

Details

• CRID: 1390001204676804864
• NII Article ID: 110004820148
• NII Book ID: AA10888815
• DOI: 10.1299/jsmeb.47.516
• COI: 1:CAS:528:DC%2BD2cXptFGlsb0%3D
• ISSN: 13475371
• ISSN: 13408054
• NDL BIB ID: 7041272
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7041272
• Web Site: http://www.jstage.jst.go.jp/article/jsmeb/47/3/47_3_516/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed