Empirical Investigation of Small-Scale Aluminium Wool Packed Solar Air Heater Made with Waste Material

Sözen, Adnan; Khanları, Ataollah; Tuncer, Azim Doğuş; Şirin, Ceylin; Afshari, Faraz; Güngör, Afşin

doi:10.2339/politeknik.710448

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…In this study, surface modification was made by polymer wrapping process on nanotubes to obtain more stable and homogeneous nanofluid [20]. In the field of heat transfer and thermodynamics the efficient heat transfer is known as one of the first-order issues [21,22], which has been widely investigated in the literature. Currently, high technology heat exchangers such as plate heat exchangers (PHE) are proposed to enhance heat transfer and to solve this problem by using different types of nanofluids [23][24][25][26][27].…”

Section: Long-term Stability Of Novel Surface-modified Fe3o4 Nanopart...mentioning

confidence: 99%

Su Bazlı Nanoakışkanların Hazırlanmasında Kullanılan Yeni Yüzey Modifiye Fe3O4 Nanopartiküllerinin Uzun Vadeli Kararlılıklarının İncelenmesi

et al. 2024

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Nanofluids are produced by suspending different solid nano-size materials (metal and nonmetal) in a base liquid and are often used in energy systems to increase thermal performance and heat transfer rate. The main problem observed in nanofluids used in heat transfer applications is their instability. Researchers have developed and proposed some solutions to obtain stable nanofluids. One of the most important solutions, is the nanoparticles surface modification method. In this work, Fe3O4 nanoparticles were subjected to chemical processes and their surfaces were modified. Three different modified nanoparticles were synthesized, which are Fe3O4@SiO2@Si(CH2)3-IM [Cl], Fe3O4@Si(CH2)3-IM [Cl], and Fe3O4@SiO2&Si(CH2)3-IM [Cl] nanoparticles. The nanofluids were prepared in 0.2% Vol. fraction by using the produced particles in base fluid which was distilled water, and stability of nanofluids were observed for 3 months. Nanofluids were subjected to ultrasonication for 3.5 h to obtain homogeneous nanofluid. Not modified water-based Fe3O4 nanofluid completely collapsed in approximately 1 week. In modified nanofluids, although sedimentation occurred, it was observed that a certain amount of the particles remained suspended even after 3 months. The most important analyses in this study are Scanning Electron Microscope, X-Ray Diffraction, and Transmission Electron Microscope.

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Section: Long-term Stability Of Novel Surface-modified Fe3o4 Nanopart...mentioning

confidence: 99%

Su Bazlı Nanoakışkanların Hazırlanmasında Kullanılan Yeni Yüzey Modifiye Fe3O4 Nanopartiküllerinin Uzun Vadeli Kararlılıklarının İncelenmesi

et al. 2024

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Numerical Analysis of Using R449A Refrigerant Alternative to R404A in Cooling Systems: 3E-Analysis (Energetic, Exergetic, and Environmental)

Yildirim¹,

Kumaş²,

Akyüz³

et al. 2023

Politeknik Dergisi

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Empirical Investigation of Small-Scale Aluminium Wool Packed Solar Air Heater Made with Waste Material

Cited by 2 publications

References 39 publications

Su Bazlı Nanoakışkanların Hazırlanmasında Kullanılan Yeni Yüzey Modifiye Fe3O4 Nanopartiküllerinin Uzun Vadeli Kararlılıklarının İncelenmesi

Su Bazlı Nanoakışkanların Hazırlanmasında Kullanılan Yeni Yüzey Modifiye Fe3O4 Nanopartiküllerinin Uzun Vadeli Kararlılıklarının İncelenmesi

Numerical Analysis of Using R449A Refrigerant Alternative to R404A in Cooling Systems: 3E-Analysis (Energetic, Exergetic, and Environmental)

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