Investigation of the Effect of Using Fe + Pure Water Nano Fluid on Thermal Performance in a Two Phase Closed Thermosiphon

Heat is a type of energy that is used in many applications and can be easily converted into other types of energy. In this study, a performance analysis was carried out by using Fe + Pure water nano fluid in place of pure water in a two phase closed thermosiphon, which has a wide place in practice due to its simple structure. In the study, a copper thermosiphon with a length of 1 m, diameter of 14 mm and wall thickness of 1 mm was used. Experiments were performed with both pure water and nano fluid to be make a comparison. To observe the performance of system in different operating conditions, the experiments were carried out at 3 different heating power (150, 300, 450 W) and 3 different coolant flow rates (3, 6, 9 g/s). In all experimental conditions, Fe + Pure water nanofluid had better results than pure water. The highest efficiency value was found to be 77.9% in the experiment using Fe + Pure water nano fluid, performed at 150 W power and 9 g/s water flow rate. When pure water was used in this experiment, the efficiency value was obtained as 67.7% and the improvement rate was 15%. The highest improvement rate was obtained as 50.3% in the experiment conducted at 450 W heating power and 3 g/s coolant flow rate. The use of nano fluid has also reduced the thermal resistance of the thermosiphon. The highest rate of decrease in thermal resistances was obtained as 56.7% in the experiment performed at 150 W heating power and 3 g/s coolant flow rate.

Keywords:

Heat Pipe, Nano Fluid, Thermal Performance Waste Heat,

PDF

___

OlabiA.G. et. al., “Application of Nanofluids for Enhanced Waste Heat Recovery: A Review”, Nano Energy, s. 105871, 2020.
C. Forman, I. K. Muritala, R. Pardemann, and B. Meyer, “Estimating the global waste heat potential”, Renew. Sustain. Energy Rev., c. 57, ss. 1568–1579, 2016.
Europan Comission, “2030 climate & energy framework”, 2021. [Online]. Available at: https://ec.europa.eu/clima/policies/strategies/2030_en#tab-0-0. [Access: 20-Şub-2021].
A. Ozsoy and V. Corumlu, “Thermal performance of a thermosyphon heat pipe evacuated tube solar collector using silver-water nanofluid for commercial applications”, Renew. Energy, c. 122, ss. 26–34, 2018.
M. Kaya et.al., “Performance analysis of using CuO-Methanol nanofluid in a hybrid system with concentrated air collector and vacuum tube heat pipe”, Energy Convers. Manag., c. 199, number August, 2019.
E. ÇİFTÇİ, “AlN/Saf Su Nanoakışkanının Isı Borusu Performans Parametreleri Üzerindeki Etkilerinin Deneysel Olarak Araştırılması”, Gazi University Journal of Science Part C: Design and Technology, c. 8, number 4, ss. 858–871, 2020.
W. W. Wang et. al., “A two-phase closed thermosyphon operated with nanofluids for solar energy collectors: Thermodynamic modeling and entropy generation analysis”, Sol. Energy, c. 211, number May, ss. 192–209, 2020.
E. Khajehpour, A. R. Noghrehabadi, A. E. Nasab, and S. M. H. Nabavi, “Experimental investigation of the effect of nanofluids on the thermal resistance of a thermosiphon L-shape heat pipe at different angles”, Int. Commun. Heat Mass Transf., c. 113, number March, s. 104549, 2020.
A. Gallego, B. Herrera, R. Buitrago-Sierra, C. Zapata, and K. Cacua, “Influence of filling ratio on the thermal performance and efficiency of a thermosyphon operating with Al2O3-water based nanofluids”, Nano-Structures and Nano-Objects, c. 22, s. 100448, 2020.
R. Vidhya, T. Balakrishnan, and B. Suresh Kumar, “Investigation on thermophysical properties and heat transfer performance of heat pipe charged with binary mixture based ZnO-MgO hybrid nanofluids”, Mater. Today Proc., 2020.
A. K. Reji, G. Kumaresan, A. Sarathi, A. G. . Saiganesh, R. Suriya Kumar, and M. M. Shelton, “Performance analysis of thermosyphon heat pipe using aluminum oxide nanofluid under various angles of inclination”, Mater. Today Proc., 2020.
N. Alagappan and C. S. Rathnasabapathy, “Performance of Two Phase Copper Thermosyphon Operated with Cerium IV Oxide and Iron II, III Oxide Nano Fluid using Box-Behnken Design”, Mater. Today Proc., c. 24, ss. 2094–2107, 2019.
A. Sözen et.al., “Upgrading of the Performance of an Air-to-Air Heat Exchanger Using Graphene/Water Nanofluid”, Int. J. Thermophys., c. 42, sayı 3, 2021.
Nanografi, “Nanografi Nano Teknoloji A.Ş”. [Online]. Available at: nanografi.com.tr. [Access: 25-Oca-2021].
H. M. Ali, Hybrid Nanofluids for Convection Heat Transfer. 2020.
R. S. Khedkar, S. S. Sonawane, and K. L. Wasewar, “Heat transfer study on concentric tube heat exchanger using TiO2-water based nanofluid”, Int. Commun. Heat Mass Transf., c. 57, ss. 163–169, 2014.
A. Sözen, M. Gürü, T. Menlik, U. Karakaya, and E. Çiftçi, “Experimental comparison of Triton X-100 and sodium dodecyl benzene sulfonate surfactants on thermal performance of TiO2–deionized water nanofluid in a thermosiphon”, Exp. Heat Transf., c. 31, number 5, ss. 450–469, 2018.
N. Sezer, M. A. Atieh, and M. Koç, “A comprehensive review on synthesis, stability, thermophysical properties, and characterization of nanofluids”, Powder Technol., c. 344, ss. 404–431, 2019.