In an age of increasing heat fluxes and power loads in applications as diverse as power electronics, renewable energy, transportation, and medical equipment, liquid cooling systems are necessary to enhance heat dissipation, improve energy efficiency, and lengthen device lifetime. To satisfy these increasing thermal management needs, the heat transfer efficiency of conventional fluids must be im...

In this study the performances of various non-circular microchannel heat sinks (normalized with circular shape) have been comparatively analyzed for CuO-water nanofluid and baseline pure water flow. Nusselt number and Poiseuille number for each microchannel and thermo-physical properties of CuO-water nanofluid (viz., thermal conductivity, viscosity, specific heat and density) have been designed...

The entropy generation based on the second law of thermodynamics is investigated for turbulent forced convection flow of ZrO2-water nanofluid through a square pipe with constant wall heat flux. Effects of different particle concentrations, inlet conditions and particle sizes on entropy generation of ZrO2-water nanofluid are studied. Contributions from frictional and thermal entropy generations ...

This study utilizes molecular dynamics simulations to scrutinize the influence of type and volume fraction nanoparticle on density nanofluids, i.e. silver (as a hydrophilic case) titanium dioxide hydrophobic water-based nanofluids. Ionic structure TiO2 distinguishes solid-liquid interactions with those in silver-water nanofluid. The thickness nanolayer is estimated from profile formed around in...

Heat transfer fluids are a dynamic factor that affects the costs and size of heat exchangers. However, low thermal properties accessible coolants like water oils place setback on growth to attain high-performance cooling. The paper presents numerical analysis comparative study characteristics Al 2 O 3 , CuO, AlN, SiC water-based nanofluids in square cavity. cavity is surrounded by hot moving ho...

In this study, the exergy efficiency of a flat plate solar collector using Al2O3, TiO2, CuO nanoparticles and pure water as base fluid is studied. Solar radiation is selected between 200 to 600 W/m2. The method to determine optimum values of optimization variables has been developed by Genetic Algorithm Toolbox in MATLAB software. Results show by increasing solar radiation the optimized exergy ...

This paper deals with research into pool boiling critical heat flux (CHF) of water–Al2O3, water–TiO2 and water–Cu nanofluids on horizontal stainless steel tubes. The experiments were conducted under atmospheric pressure. Nanoparticles tested at concentrations 0.001%, 0.01%, 0.1% 1% by weight. Ultrasonic vibration was used in order to stabilize the dispersion nanoparticles. Although dispersants ...

This paper contains the results of a concise statistical review analysis of a large amount of publications regarding the anomalous heat transfer modes of nanofluids. The application of nanofluids as coolants is a novel practise with no established physical foundations explaining the observed anomalous heat transfer. As a consequence, traditional methods of performing a literature review may not...