Heat pipe solar collectors (HPSCs) are heat exchangers that carry based on the phase change of working fluid. It is aimed to increase operating temperature range by changing fluid in at low temperature. For this reason, it has become widespread use nanofluids obtained mixing nanosized metal oxides with base certain proportions order both thermal conductivity fluids and specific closures. The ma...

In the present study, heat transfer characteristics, namely, coefficient, Nusselt number, pressure drop, friction factor and performance evaluation criteria are evaluated for water, Al2O3 Al2O3/Cu nanofluids. The effects of Reynolds volume fraction composition nanoparticles in hybrid nanofluid analyzed all characteristics. single particle nanofluids flowing through a plain straight tube which i...

The present paper focuses on problem of mixed convection fluid flow and heat transfer of Al2O3-water nanofluid with temperature and nanoparticles concentration dependent thermal conductivity and effective viscosity inside Lid-driven cavity having a hot rectangular obstacle. The governing equations are discretized using the finite volume method while the SIMPLER algorithm is employed to couple v...

This paper addresses entropy generation in the flow of an electrically-conducting couple stress nanofluid through a vertical porous channel subjected to constant heat flux. By using the Buongiorno model, equations for momentum, energy, and nanofluid concentration are modelled, solved using homotopy analysis and furthermore, solved numerically. The variations of significant fluid parameters with...

Output performance of a thermoelectric-based automotive waste heat recovery system with a nanofluid coolant is analyzed in this study. Comparison between Cu-Ethylene glycol (Cu-EG) nanofluid coolant and ethylene glycol with water (EG-W) coolant under equal mass flow rate indicates that Cu-EG nanofluid as a coolant can effectively improve power output and thermoelectric conversion efficiency for...

With the growing consumer demand in electronics field, sustainable and effective cooling approaches are imperative to maximize operational efficiency. Heat pipes shave a major consideration field of heat transfer modern era miniaturization equipment. In current trends, proportion custom-designed electronic chips is increasing, given space constraints application. Additionally, use nanofluids ha...

for better understanding the effect of nanofluid flow in a porous medium, a set of experiments were conducted on a horizontal glass micromodel for al2o3-water nanofluids. to characterize the flow of nanofluids the same experiment was done by pure water. the glass micromodel was constructed by a photolithography technique. the al2o3-water nanofluids were produced by a two-step method and no surf...

The introduction of toxic chemicals into the environment can result in water pollution leading to degradation biodiversity as well human health. This study presents a new approach using metal oxides (Al2O3 and SiO2) modified with plasmonic (silver, Ag) nanoparticles (NPs)-based nanofluid (NF) formulation for environmental remediation purposes. Firstly, we prepared Al2O3 SiO2 NFs different conce...

The impact of gyrotactic microorganisms in the mixed convection stagnation point flow Cu-Al2O3/water hybrid nanofluid towards an immovable plate is numerically examined. boundary layer equation coupled with energy, nanoparticle volume fraction and conservation equations for are simplified into a set ordinary differential by adopting similarity transformation. validation results good agreement p...