最適化されたナノ流体クーラントがラフテッドフィン自動車用ラジエーターの熱性能を向上させる
Ferdinard Dika Oshionebo1, Doga Kavaz2, Dilber Uzun Ozsahin3,4,5
1Energy Systems Engineering Department, Cyprus International University, Haspolat-Lefkosa, Mersin 10, Turkey.
Scientific reports
|December 12, 2025
まとめ
三元ハイブリッドナノ流体は、ラジエーターの冷却性能を大幅に向上させます。最適な製剤はエンジン出口温度を最大44.6%削減しましたが、高濃度では全体的な効率がわずかに低下しました。
科学分野:
- 材料科学
- 熱力学
- 自動車工学
背景:
- 従来の自動車用クーラントは、熱伝達効率に限界があります。
- ナノ流体、特にハイブリッドおよび三元の組み合わせは、強化された熱性能の可能性を示しています。
- 粒子特性と体積分率は、ナノ流体の特性に大きく影響します。
研究 の 目的:
- さまざまな三元ハイブリッドナノ流体を使用したラフテッドフィンラジエーターの熱性能を数値的に調査すること。
- さまざまなナノ粒子（例：Fe/Cu/Ag、Fe/Cu/ZnO、Ag/Al2O3/TiO2）と体積分率の影響を評価すること。
- 最大の冷却効率に最適なナノ流体組成を決定すること。
主な方法:
- ラフテッドフィンラジエーターの熱伝達の数値シミュレーション。
- ZnO、Al2O3、TiO2、MWCNT、グラフェン、Fe、Cu、Agなどのナノ粒子を使用した三元ハイブリッドナノ流体を利用しました。
- ヌセルト数、熱伝達係数、出口クーラント温度などのパラメータを分析しました。
主要な成果:
- Fe/Cu/Ag、Fe/Cu/ZnO、Ag/Al2O3/TiO2などの特定の三元ハイブリッドナノ流体が対流熱伝達を強化しました。
- ナノ粒子の体積分率の増加は、出口クーラント温度の低下につながり、最適な流体は44.6%の低下を達成しました。
- パフォーマンスインデックスは、テストされたナノ流体全体で5.8-11.7%減少し、非金属酸化物は最小限の減少を示しました。
結論:
- 三元ハイブリッドナノ流体は、ラジエーターの冷却効率を高めるのに効果的です。
- ナノ粒子濃度と熱伝達の間の最適なバランスが重要です。
- より高い体積分率での効率のトレードオフに関するさらなる研究が保証されます。
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