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Design and Fabrication of Flexible Heat Pipes with Innovative Wick Structure

  • Unique Paper ID: 172101
  • Volume: 11
  • Issue: 8
  • PageNo: 1936-1944
  • Abstract:
  • This study presents the design and fabrication of flexible heat pipes featuring a novel wick structure, utilizing laser-ablated casing materials and aluminum compound packing films. The wick is constructed from gradient-wetting copper meshes coated with nanowires, which enhance the capillary effect and improve heat transfer efficiency. Deionized water is selected as the working fluid, with three different filling ratios (10%, 25%, and 35%) to evaluate their impact on thermal performance. The developed flexible heat pipes can bend between 0° and 180° in a horizontal orientation while maintaining a thermal resistance of approximately 0.75 °C/W, corresponding to an effective thermal conductivity of around 1200 W/m·K, even after multiple bending cycles. Theoretical analysis shows that bending disrupts the vapor flow from the evaporator to the condenser, leading to an increase in the liquid-vapor interfacial thermal resistance in the evaporation section. The objective of this research is to apply these flexible heat pipes with their innovative wick structure for thermal management in deployable structures.
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  • ISSN: 2349-6002
  • Volume: 11
  • Issue: 8
  • PageNo: 1936-1944

Design and Fabrication of Flexible Heat Pipes with Innovative Wick Structure

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Journal no 47859

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