Akademik Veri Yönetim Sistemi
4 thInternational Congress on Multidisciplinary Natural Sciences, Ankara, Türkiye, 07 Aralık 2024 - 08 Aralık 2025, cilt.4, ss.24-25, (Tam Metin Bildiri)
In this study, the effects of using zinc iron oxide nanofluid on the system performance as an alternative to the working fluids used in vacuum glass tube heat pipe thermal solar energy systems were investigated. In this research, system efficiency was found using the experimental method. Average inlet water temperature is for flow rate 1 lt./min.; 18.83°C, for 1.5 lt./min.; 17.3°C and for 2 lt/min. is 15.98°C and exit water temperatures; At 1 lt./min, the average outlet temperature was 20.45°C for water and 20.92°C for nanofluid. At 1.5 lt./min, it was 18.79°C for nanofluid compared to 18.48°C for water and 17.16°C for nanofluid at 2 lt./min, which is 0.25°C higher than the water-based system. Thermal efficiencies; at 1 lt./min, it achieved an improvement of approximately 30.1%, from 45.29% for water to 58.93% for nanofluid. At 1.5 lt./min, efficiencies increased to 48.98% for water and 62.28% for nanofluid, reflecting a 27.1% improvement. As for flow rate 2 lt./min, the efficiencies were 52.16% for water and 66.44% for nanofluid, resulting in a 27.4% improvement. While the amount of thermal energy gained by the collectors at 1 lt./min was 113.35 W on average for the water-based collector, it was 146.13 W for the nanofluid-based collector, indicating an increase of 28.9%. At 1.5 lt./min, it increased to 123.85 W for recovered water and 156.02 W for nanofluid, indicating an improvement of 26.0%. At 2 lt./min, the water-based system reached 128.55 W and the nanofluid-based system reached 163.90 W, indicating an improvement of 27.5%. The results obtained showed that the use of zinc iron oxide nanofluid had a positive effect in terms of the thermal efficiency of the system. Keywords: Vacuum-glass tube, Heat pipe, Nano fluid, Zinc iron oxide