Parametrik Nanoakışkanlar Kullanılarak Farklı Koşullar Altında Çalışan Bir Yerçekimi-Destekli Isı Borusunun Isı Transfer Verimliliğinin Deneysel İncelenmesi

Öz

Yüksek termal iletkenlik katsayıları ve düşük termal direnç özellikleri nedeniyle ısı transfer sistemlerinde performansı artıran önemli bir yenilik olarak nanoakışkanlar dikkat çekmektedir. Bu çalışmada, ısı borusunun evaporatör bölgesinden ısıyı çekmek için %0,5 alümina (Al2O3), titanyum dioksit (TiO2) ve bakır(II) oksit (CuO) kullanılarak saf su bazlı nanoakışkanlar hazırlanmıştır. Ayrıca, nanoakışkanı stabilize etmek için sodyum dodesilbenzen sülfonat yüzey aktif maddesi kullanılmıştır. Deneysel çalışmada, ısı borusuna su ceketi entegre edilmesinin ve farklı miktarlarda çalışma sıvısı (nanoakışkan) kullanılmasının ısı transferi üzerindeki etkileri ayrı ayrı incelenmiştir. Sonuçlar, CuO nanoakışkanının en düşük R-değerini gösterdiğini ve Al2O3 nanoakışkanına kıyasla %4,64, TiO2 nanoakışkanına kıyasla ise %8,77 daha iyi termal performans sergilediğini göstermiştir. Bu çalışma, enerji verimliliği gerektiren endüstriyel uygulamalar için sürdürülebilir bir çözüm sunmayı ve alandaki bilgi birikimine katkıda bulunarak daha ileri araştırmalar için zemin hazırlamayı amaçlamaktadır.

Anahtar Kelimeler

• Nanoakışkan
• alümina
• titanyum dioksit
• bakır(II) oksit
• ısı borusu

Experimental Investigation of Heat Transfer Efficiency of a Gravity-Assisted Heat Pipe Operating Under Different Conditions Using Parametric Nanofluids

Öz

Nanofluids are attracting attention as a significant innovation that improves performance in heat transfer systems due to their high thermal conductivity coefficient and low thermal resistance properties. In this study, pure water-based nanofluids were prepared using 0.5% alumina (Al2O3), titanium dioxide (TiO2), and copper (II) oxide (CuO) to extract heat from the evaporator region of a gravity-assisted heat pipe. Additionally, sodium dodecylbenzene sulfonate surfactant was used to stabilize the nanofluid. In the experimental study, the effects of integrating a water jacket into the gravity-assisted heat pipe and using different amounts of working fluids (nanofluids) on heat transfer were investigated separately. According to results, the lowest R value was found to be 0.1846 at the 80ml and 100ml volume ratios using CuO nanofluid, while the second lowest R value was calculated to be 0.1932 at the 80ml volume ratio using Al2O3 nanofluid. The results also showed that the CuO nanofluid exhibited the lowest R-value, demonstrating better thermal performance by 4.64% compared to the Al2O3 nanofluid and by 8.77% compared to the TiO2 nanofluid. This study aims to provide a sustainable solution for industrial applications requiring energy efficiency and to contribute to the body of knowledge in the field, laying the groundwork for further research.

Anahtar Kelimeler

• Nanofluids
• alumina
• titanium dioxide
• copper (II) oxide
• heat pipes

Kaynakça

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