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...

In this study, the heat transfer rate of Al2O3-water nanofluid-flow in a tube with twisted tape inserts is experimentally examined. The insert can cause swirling region fluid-flow which will enhance coefficient. On other hand, have great influence on pressure drop. It known that nanoparticles and may both increase fluid. Thus, it tried to demonstrate combined effect phenomena, experimentally. w...

In this paper, nanofluid heat transfer in a microchannel has been studied using homogenous and Buongiorno’s models, compared with Eulerian-Lagrangian model. The base fluid is water the particles are Al2O3 Cu diameter of 100nm. volume fraction up to 2% Reynolds number range 250-1000. governing equations including continuity, momentum energy, have solved control method (SIMPLE). results show that...

The advancement of heat transfer techniques is a challenge to the researcher in this era. Implementation nanotechnology one potential which enhance rate significant amount. Subsequently, can reduce requirement pumping power. However, suspension nanoparticle with liquid produce new working fluid called nanofluid has better thermal and dynamic properties comparison
 pure introduced as typica...

in this study, flow field and heat transfer of al2o3-cu/water micropolar hybrid nanofluid is investigated in a permeable channel using the least square method. the channel is encountered to chemical reaction, and a constant magnetic field is also applied. the bottom wall is hot and coolant fluid is injected into the channel from the top wall. the effects of different parameters such as the reyn...

This study aims to enhancement of heat transfer in double pipe exchanger by improving the thermal properties base fluid which is water adding AL2O3-Fe2O3 nanoparticles water. Al2O3-Fe2O3/water hybrid Nanofluid were examined experimentally and numerically at different flow rates ranging between (3 -7) Lpm temperature 25°C an external tube while there was a hot 60°C rate ranged – 5) running centr...

A nanofluid is composed of a base fluid with suspension nanoparticles that improve the fluid’s thermophysical properties. In this work, authors have conducted experimental tests on an alumina-based (Al2O3/H2O) moving inside 3D-printed lattice channel. The unit cell’s shape can be considered double X or pyramidal truss common vertex. test channel 80 mm long and has cross-sectional area, without ...