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Low Heat Capacity 3D Hollow Microarchitected Reactors for Thermal and Fluid Applications

Author

Listed:
  • Seok Kim

    (Department of Mechanical Engineering, Changwon National University, Changwon 51140, Korea)

  • Sang-Hoon Nam

    (Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA)

  • Seokho Kim

    (Department of Mechanical Engineering, Changwon National University, Changwon 51140, Korea)

  • Young Tae Cho

    (Department of Mechanical Engineering, Changwon National University, Changwon 51140, Korea)

  • Nicholas X. Fang

    (Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA)

Abstract

Lightweight reactor materials that simultaneously possess low heat capacity and large surface area are desirable for various applications such as catalytic supports, heat exchangers, and biological scaffolds. However, they are challenging to satisfy this criterion originating from their structural property in most porous cellular solids. Microlattices have great potential to resolve this issue in directing transport phenomena because of their hierarchically ordered design and controllable geometrical features such as porosity, specific surface, and tortuosity. In this study, we report hollow ceramic microlattices comprising a 10 μm thick hollow nickel oxide beam in an octet-truss architecture with low heat capacity and high specific surface area. Our microarchitected reactors exhibited a low heat capacity for a rapid thermal response with a small Biot number (Bi << 1) and large intertwined surface area for homogeneous flow mixing and chemical reactions, which made them ideal candidates for various energy applications. The hollow ceramic microlattice was fabricated by digital light three-dimensional (3D) printing, composite electroless plating, polymer removal, and subsequent thermal annealing. The transient thermal response and fluidic properties of the 3D-printed microstructures were experimentally investigated using a small-scale thermal and fluid test system, and analytically interpreted using simplified models. Our findings indicate that hollow microarchitected reactors provide a promising platform for developing multifunctional materials for thermal and fluid applications.

Suggested Citation

  • Seok Kim & Sang-Hoon Nam & Seokho Kim & Young Tae Cho & Nicholas X. Fang, 2022. "Low Heat Capacity 3D Hollow Microarchitected Reactors for Thermal and Fluid Applications," Energies, MDPI, vol. 15(11), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4073-:d:829810
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    References listed on IDEAS

    as
    1. Chu Ma & Seok Kim & Nicholas X. Fang, 2019. "Far-field acoustic subwavelength imaging and edge detection based on spatial filtering and wave vector conversion," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    2. Thomas Steiner & Daniel Neurauter & Peer Moewius & Christoph Pfeifer & Verena Schallhart & Lukas Moeltner, 2021. "Heat-Up Performance of Catalyst Carriers—A Parameter Study and Thermodynamic Analysis," Energies, MDPI, vol. 14(4), pages 1-28, February.
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    Cited by:

    1. Marcin Kruzel & Tadeusz Bohdal & Krzysztof Dutkowski, 2024. "Heat Transfer Enhancement in a 3D-Printed Compact Heat Exchanger," Energies, MDPI, vol. 17(18), pages 1-18, September.

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