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Heat transfer efficiency of metal honeycombs.

Author(s) : LU T. J.

Type of article: Article

Summary

The efficiency of micro-cell aluminium honeycombs in augmenting heat transfer in compact heat exchangers is evaluated using analytical models. For convective cooling, the overall heat transfer rate is found to be elevated by about two order of magnitudes when an open channel is designed with an aluminium honeycomb cote. Another advantage of designing heat sinks with honeycombs is the relatively small pressure drop experienced and minimal noise generated by the laminar flow. The overall heat transfer rate of the heat sink is maximised when the cell morphology of the honeycomb is optimised. For air cooling, the optimal relative density of the honeycomb is about 0.1. Other related effects, such as cell orientation and double cell wall thickness, are discussed.

Details

  • Original title: Heat transfer efficiency of metal honeycombs.
  • Record ID : 2000-0675
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 42 - n. 11
  • Publication date: 1999/06

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