EXPERIMENTAL INVESTIGATION OF ABSORPTION AND THERMAL ANALYSIS OF DIFFERENT TYPES OF NANOPARTICLES WITH MOTOR OIL BASED NANOFLUIDS

Yıl 2023, Cilt: 11 Sayı: 1, 87 - 102, 01.03.2023

Jasim Al-enezy Rafet Yapıcı Amar Hameed

https://doi.org/10.36306/konjes.1164260

Öz

Nanofluids are fluid suspensions of nanoparticles that exhibit notable properties enhancement even at low nanoparticle concentrations. This work compares the measured and calculated thermophysical parameters of nanofluidic motor oil. Thermophysical parameters of motor oils include thermal conductivity, viscosity, and Absorbance. The nanofluidic engine oil was prepared by dispersing multi-walled carbon nanotube (MWCNTs) and copper oxide (CuO) at different particle concentrations (0.03-0.12) %. The oil characteristics were measured at wide range of temperature. The viscosity data were found to be comparable to the numbers reported in literature. We found that the thermal conductivity increased up to five times with minor variance in some cases. The variation in thermal conductivity can be related to several reasons such as oil specifications and nanofluid preparation conditions. The measured Absorbance of the nanofluid is comparable to literature and has direct proportion relation with the volume fraction of nanoparticles.

Anahtar Kelimeler

Absorption, Nanofluid, Thermal Conductivity, Viscosity

Motor Yağı Bazlı Nanoakışkanlar ile Farklı Tipteki Nanoparçacıkların Absorpsiyon ve Termal Analizinin Deneysel Olarak İncelenmesi

Öz

Üstün termal ve fiziksel nitelikleri nedeniyle nano akışkanlar, ısı transferi uygulamalarında giderek daha fazla kullanılmaktadır. Bu araştırma, çeşitli termofiziksel parametreler için teorik hesaplamaları, bu kesin miktarların deneysel ölçümleriyle karşılaştırır. Dağınık MWCNT'ler ve CuO içeren bir nano akışkan olarak motor yağının termofiziksel özellikleri, geniş bir sıcaklık aralığı ve partikül konsantrasyon oranı boyunca incelenmiştir. Bu tür özelliklerin örnekleri ısı iletkenliği, viskozite ve emiciliktir. Viskozite verilerinin literatürle uyumlu olduğu görüldü. Bununla birlikte, diğer birçok araştırmacının onayladığı, termal iletkenlik sonuçlarında bariz bir tutarsızlık vardır. UV-Vis absorbans sonuçlarının daha önce mevcut olan literatürle karşılaştırılması tatmin ediciydi. Ancak, sıvının bileşenlerinin özellikleri ve hazırlama işlemlerinin koşulları da dahil olmak üzere çeşitli nedenlerle ilgili bazı farklılıklar vardır.

Anahtar Kelimeler

nanoakışkan, termal iletkenlik, viskozite, absorpsiyon

Kaynakça

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