چكيده به لاتين
Increasing the efficiency of heat exchangers has always been one of the most important concerns of the industry. Swing heat pipes are a new and high-efficiency technology in the field of heat transfer. Oscillating heat pipes are widely used in solar water heaters, solar water sweeteners, solar cells, etc. In this research project, the effect of using different nanofluids on the performance of the heat pipe and the solar cell panel has been investigated. Three nanofluids of zirconium oxide ferrite bismuth (ZBF), zirconium dioxide (ZrO2) and hybrid composites of zirconium dioxide/silicon dioxide (ZrO2/SiO2) and zirconium dioxide/silicon dioxide/Polyaniline (ZrO2/SiO2/PANI) Was synthesized and confirmed by SEM, EDX, XRD, FT-IR, UV/VIS and TGA analyzes to confirm the accuracy of the prepared nanocomposites. The performance of the prepared nanofluids was investigated in heat exchangers and solar cells at concentrations of 0.25, 0.5 and 1 g /l. Also, the performance of the heat pipe using optimal nanofluid in the states containing conductive polymer and without conductive polymer was compared. For this purpose, at different input capacities to evaporator and constant filling ratio of 50% thermal resistance for different nanofluids were investigated. Also, the effects of thermal conductivity and dynamic viscosity on the performance of nanofluids (containing conductive polymers and non-conductive polymers) and consequently the performance of heat exchangers were evaluated. The results show that the use of nanofluids as a working fluid can improve heat transfer in oscillating heat pipes and solar cell panels compared to the working fluid of water and reduce the thermal resistance to an acceptable level. It should be noted that in this case, the resistance of the oscillating heat pipe in some fluxes was reduced to 48%.
