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Experimental studies to evaluate the use of metal foams in highly compact air-cooling heat exchangers.

Number: pap. n. R3, 2502

Author(s) : NAWAZ K., BOCK J., DAI Z., et al.

Summary

Open-cell aluminum foam is considered as a highly compact replacement for conventional fins in brazed aluminum heat exchangers. The experimental data needed to for evaluation are obtained through wind-tunnel experiments. Using a closed-loop wind tunnel, heat transfer and pressure drop measurements are undertaken, and the results are characterized as Colburn j-factor and friction factor for geometric configurations of foam and flat tubes that mimic current multi-louver, microchannel geometries. The data obtained in the wind-tunnel are used to evaluate the potential for using metal foam (of varying porosity) as a replacement to conventional fins for a ange of configurations and operating conditions typical for air-cooling applications. Finally, we comment on some of the challenges that must be met for the adoption of this technology in air-cooling systems.

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Pages: 11 p.

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Details

  • Original title: Experimental studies to evaluate the use of metal foams in highly compact air-cooling heat exchangers.
  • Record ID : 30000489
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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