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    Experimental and Theoretical Investigation on Thermal Conductivity of Combined Nanofluids

    , M.Sc. Thesis Sharif University of Technology Iranidokht, Vahid (Author) ; Shafii, Mohammad Behshad (Supervisor)
    Application of nanotechnology in the field of heat transfer has increased recently. The need to increase heat transfer rate yet decrease the size of cooling equipment, brought about lots of attention to thermal properties of Nanofluids. Nanofluid is the suspension of nanometer-sized solid particles in base liquid. Research on convective heat transfer of nanofluids which is only two decades old, shows great potential in increasing heat transfer rate. Although there is a remarkable research on thermal conductivity of Nanofluids, negligible research was conducted on combined Nanofluids . Developed Theory for thermal conductivity of combined nanofluid can be used to modeling the thermal... 

    Experimental Investigation of Thermal Performance of Pulsating Heat Pipe Filled with Hybrid Nanofluid

    , M.Sc. Thesis Sharif University of Technology Alishiri, Mojgan (Author) ; Saeedi, Mohammad Hassan (Supervisor)
    Today, oscillating heat pipes play an undeniable role in energy recovery due to their high thermal capacity. Studies show that the working fluid plays a more effective role in improving the performance of the oscillating heat pipes. In this study, a model is proposed to determine the optimal concentrations of Fe3O4-MWCNT/DI Water hybrid nanofluid based on NSGA-II multi-objective optimization algorithm. The Thermophysical properties of the fluid have been optimized to obtain the concentrations that provide the highest thermal conductivity and specific heat capacity and the lowest dynamic viscosity and density for hybrid nanofluids. Then a number of these concentrations¬ have ¬been selected...