New Thermal Transport Functionality Based on Understanding of Heat Fluid Physics at Chemically Modified Porous Interfaces

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H02085
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: Nagoya University
• Principal Investigator: Nagano Hosei 名古屋大学, 工学研究科, 教授 (10435810)
• Co-Investigator(Kenkyū-buntansha): 岡 智絵美 名古屋大学, 工学研究科, 助教 (70823285)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ループヒートパイプ / 多孔質 / 濡れ性 / 二相流 / 熱輸送デバイス / 磁性ナノ粒子

Outline of Final Research Achievements

Porous materials with high-performance characteristics and specific geometric shapes were created and incorporated into heat transport devices to assess their system-level performance. Optimal conditions were determined for different types of heat transport devices, and device design and fabrication followed established guidelines. A novel method using magnetic nanoparticles as a mold was proposed to produce directional porous materials, and multiple prototypes were manufactured under various resin and production conditions. The results showed that the characteristics of the porous materials varied significantly based on the applied magnetic field and the removal conditions of magnetic nanoparticle chains. Furthermore, manufacturing conditions were identified that produced porous materials with desirable properties for heat transport devices.

Free Research Field

熱工学

Academic Significance and Societal Importance of the Research Achievements

電力を用いることなく熱輸送が可能なループヒートパイプは次世代の熱輸送技術として中毛されている。しかしながら動作原理となる多孔体表面での気液相変化過程は明らかになっておらず性能向上指針も明らかではなかった。本研究は多孔体表面での気液相変化過程の理解に基づく表面改質と幾何学形状最適化により性能向上を図ることに成功した。また，化学的手法による高度に一次元配向した多孔体の製作も試行し，その実現性も検証することができた。