Journal of Clinical Chemistry and Laboratory Medicine
Open Access
ISSN: 2736-6588
ISSN: 2736-6588
Mekonen Asefa
University of Miskolc, Hungary
Scientific Tracks Abstracts: J Clin Chem Lab Med
In this study, graphitic carbon nitride (g-C3N4) nanofluids were systematically prepared and evaluated using distilled water (DW) and ethylene glycol (EG) as base fluids in varying volume ratios of 100:0, 0:100, 30:70, 70:30, and 50:50 (DW:EG). A two-step dispersion method was employed, where pre-synthesized g-C3N4 nanoparticles were incorporated into the base fluids at different weight concentrations of 0.01, 0.03, and 0.05 wt%, followed by magnetic stirring and ultrasonication to achieve stable suspensions.
The stability of the prepared nanofluids was assessed using zeta potential analysis and sedimentation observation, confirm ing good dispersion behavior across selected compositions. The influence of nanoparticle concentration, base fluid ratio, and temperature on thermophysical properties was systematically investigated. Viscosity measurements revealed a moder ate increase with nanoparticle loading, while maintaining acceptable flow characteristics, particularly in DW-rich mixtures. Thermal conductivity showed a significant enhancement with increasing g-C3N4 concentration and temperature, with hy brid base fluids (DW–EG mixtures) demonstrating optimized performance due to synergistic effects.
Furthermore, heat transfer capability was evaluated under varying thermal conditions, indicating that nanofluids with bal anced DW:EG ratios (e.g., 50:50 and 70:30) exhibited superior performance compared to pure base fluids. The enhancement is attributed to improved particle dispersion, Brownian motion, and interfacial heat transport mechanisms. Overall, g-C3 N4 nanofluids prepared in DW–EG mixtures show strong potential for advanced thermal management applications such as heat exchangers and cooling systems.
Mekonen Asefa has completed his Masters degree at the age of 26 years from Budapest University of Technology and Eco nomics. Currently, he is the student PhD on Materials and Chemical Engineering at Universityof Miskolci, Hungary. He pre sented papers in more than 5 national and international conferences.