Akademik Veri Yönetim Sistemi
5th International Conference of Materials and Engineering Technology (TICMET'23), Trabzon, Türkiye, 13 - 16 Kasım 2023, ss.10-19
Oil-type transformers (YTT), which have a strong place in the distribution of electrical energy, are electrical machines with a higher usage density compared to other types. These transformers stand out with the parameters of cost, efficiency, and performance. Since these parameters directly affect the useful life of transformers, studies in this field are common. Various current and interdisciplinary research is carried out specially to reduce the temperature effect, which is one of the most important negative effects, during the operation of transformers. Nanoparticles, the use of which has increased in recent years, are preferred in cooling systems due to their good heat transfer properties. Better cooling is provided by utilizing the high specific heat capacities and thermal conductivity properties of nanoparticles. In this study, heat transfer is provided by using nanoparticle fluids as well as conventional methods for cooling a 1.5 kVA transformer. For this, nanoparticle (𝐴𝐴𝐴𝐴2𝑂𝑂3, 𝑇𝑇𝑇𝑇𝑂𝑂2 ve 𝐶𝐶𝐶𝐶𝑂𝑂2) materials and water dispersion fluid are used. These nanoparticles are prepared in sizes 5-20 nm and in mass fractions of 0.5, 1 and 1.5%. In addition, transformer cooling system is designed by using SDS (sodium dodecyl sulfate) surfactant to prevent agglomeration and stable operation of fluids. Experimental studies confirm that fluids with nanoparticle materials provide better heat transfer than conventional cooling methods (water, naphtanic/paraffinic based oils).