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Experimental validation of additively manufactured optimized shapes for passive cooling

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  • Lazarov, Boyan S.
  • Sigmund, Ole
  • Meyer, Knud E.
  • Alexandersen, Joe

Abstract

This article confirms the superior performance of topology optimized heat sinks compared to lattice designs and suggests simpler manufacturable pin-fin design interpretations. The development is driven by the wide adoption of light-emitting-diode (LED) lamps for industrial and residential lighting. Even for advanced lighting technology as LEDs, a large fraction of the input power is still converted to heat. Thus, efficient thermal control lowers energy waste, increases lifetime and reduces maintenance costs of this rapidly growing, expectedly soon to be governing, illumination technology. The presented heat sink solutions are generated by topology optimization, a computational morphogenesis approach with ultimate design freedom, relying on high-performance computing and simulation. Optimized devices exhibit complex and organic-looking topologies which are realized with the help of additive manufacturing. To reduce manufacturing cost, a simplified interpretation of the optimized design is produced and validated as well. Numerical and experimental results agree well and indicate that the obtained designs outperform lattice geometries by more than 21%, resulting in a doubling of life expectancy and 50% decrease in operational cost.

Suggested Citation

  • Lazarov, Boyan S. & Sigmund, Ole & Meyer, Knud E. & Alexandersen, Joe, 2018. "Experimental validation of additively manufactured optimized shapes for passive cooling," Applied Energy, Elsevier, vol. 226(C), pages 330-339.
    • Handle: RePEc:eee:appene:v:226:y:2018:i:c:p:330-339
    DOI: 10.1016/j.apenergy.2018.05.106
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    References listed on IDEAS

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    7. Jang, Daeseok & Yook, Se-Jin & Lee, Kwan-Soo, 2014. "Optimum design of a radial heat sink with a fin-height profile for high-power LED lighting applications," Applied Energy, Elsevier, vol. 116(C), pages 260-268.
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    Cited by:

    1. See, Y.S. & Ho, J.Y. & Leong, K.C. & Wong, T.N., 2022. "Experimental investigation of a topology-optimized phase change heat sink optimized for natural convection," Applied Energy, Elsevier, vol. 314(C).
    2. Ding, Yudong & Zhang, Wenhe & Deng, Bin & Gu, Yuheng & Liao, Qiang & Long, Zhenze & Zhu, Xun, 2022. "Experimental and numerical investigation on natural convection heat transfer characteristics of vertical 3-D externally finned tubes," Energy, Elsevier, vol. 239(PB).
    3. Rissman, Jeffrey & Bataille, Chris & Masanet, Eric & Aden, Nate & Morrow, William R. & Zhou, Nan & Elliott, Neal & Dell, Rebecca & Heeren, Niko & Huckestein, Brigitta & Cresko, Joe & Miller, Sabbie A., 2020. "Technologies and policies to decarbonize global industry: Review and assessment of mitigation drivers through 2070," Applied Energy, Elsevier, vol. 266(C).
    4. Pizzolato, Alberto & Sharma, Ashesh & Ge, Ruihuan & Maute, Kurt & Verda, Vittorio & Sciacovelli, Adriano, 2020. "Maximization of performance in multi-tube latent heat storage – Optimization of fins topology, effect of materials selection and flow arrangements," Energy, Elsevier, vol. 203(C).

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