in recent decade, the new advanced nanofluids, composed from various particles, have attracted the attention of researchers. this class of nanofluids, which can be prepared by suspending several types (two or more than two) of nanoparticles in base fluid, is termed as hybrid nanofluids. in this work, an experimental investigation on the effects of temperature and concentration of nanoparticles ...

In this mathematical model, the consequences of Soret and Dufour’s effects on energy mass transport have been reported. The hybrid nanofluid (hnf) comprised silver (Ag) magnesium oxide (MgO) nps is studied over a stretching rotating sheet. influence thermal radiation, second-order chemical reaction, activation energy, magnetic field also applied to fluid flow. phenomena are designed in form non...

In this study, the least square method is applied to study the laminar flow, heat transfer and microrotation of MgO-Ag/water micropolar hybrid nanofluid in a permeable channel. The bottom wall is hot and coolant fluid is injected into the channel from the top wall. The base fluid in the channel is water and volume fraction of nanoparticle (50% Ag and 50% MgO by volume) is between 0 and 0.02. By...

Convective heat transfer of MgO-water nanofluid in a microchannel heat sink is experimentally investigated in various concentrations of 0.01, 0.05, 0.1, and 0.6 wt%. The microchannel consisted of 48 parallel rectangular cross section channels with the height of 800 µm, width of 524 µm and length of 52 mm. A well stability duration (ca. 1 month) was resulted by a 180 min ultra-sonication of the ...

Abstract Nanofluid flooding has become one of the advantageous enhanced oil recovery (EOR) techniques due to transcendental property nanoparticle. Nanoparticles with various morphology presents different effects and mechanisms EOR. To provide some guidance on selection nanomaterials for flooding, 4 kinds nanomaterials, including silicon dioxide (SiO 2 ), magnesium oxide (MgO), graphene (GO) mol...

In this numerical study, 4 types of hybrid nanofluid, including Ag-MgO/water, TiO2-Cu/water, Al2O3-CuO/water, and Fe3O4-multi-wall carbon nanotube/water, have been considered potential working fluid in a single U-tube borehole heat exchanger. The selected nanofluid is then analyzed by changing the volume fraction Reynolds number. Based on results, Ag-MgO/water chosen as most favorable carrier f...

In this paper, the main goal is to study impact of nanopowder volume concentration and ultrasonication treatment time on stability thermophysical properties MgO-DW nanofluid at room temperature. The co-precipitation method was utilized prepare pure MgO nanoparticles with an average particle size 33 nm. prepared characterized by using XRD, SEM, EDX analyses. Then, obtained different concentratio...

Polyalphaolefin (PAO) oil is widely used as a dielectric liquid due to its outstanding strength, high flash point, good oxidation resistance, and stability. The dispersion of MgO nanoparticles in PAO yields nanofluids with many properties superior base oils. This study clarifies the influence on (breakdown voltage, volume resistivity, relative permittivity) heat transfer PAO/MgO nanofluids. Cha...

Energy and exergy (EnE) efficiencies are considered the most important parameters to compare performance of various thermal systems. In this paper, an analysis was carried out for EnE a flat plate solar collector (FPSC) using four different kinds nanofluids as flowing mediums, namely, Al2O3/water, MgO/water, TiO2/water, CuO/water, compared with water medium (traditional base fluid). The made na...

A water-based functionalized nanofluid was made by surface functionalizing the ordinary silica nanoparticles. The functionalized nanofluid can keep long-term stability. and no sedimentation was observed. The functionalized nanofluid as the working fluid is applied in a thermosyphon to understand the effect of this special nanofluid on the thermal performance of the thermosyphon. The experiment ...