3 CFD heat transfer study of nano-enhanced phase change material
-
Meriem Nouira
Abstract
Phase change materials (PCMs) are a highly promising option for building and solar applications. However, the current limitation of PCMs in terms of poor thermal conductivity hinders their efficiency and utility. It is imperative to address this challenge head-on by developing novel approaches that can enhance the thermal conductivity of these materials. Recent studies have seldom found that the incorporation of different nanoparticle additives with various weight fractions, simultaneously, can effectively enhance the thermal conductivity of PCM. This study aims to investigate, in a first step, the impact of various types of nanoparticles added to a macro-encapsulated PCM and heated from one side. In particular, the effects of graphene, Al2O3, and CuO nanoparticles at a weight fraction of 3% have been examined to determine the most suitable nanoparticle. Based on the findings, the effect of nanoparticles added in different weight fractions within PCM has been further explored as a next step. The transient temperature profiles, velocity fields, velocity magnitude, melting front, and melt fractions have been thoroughly analyzed and discussed in detail. For instance, loading 3 wt% graphene nanoparticles to the pure PCM has led to a completely liquid state within just 3 h and 50 min, whereas the addition of 3 wt% Al2O3 and CuO nanoparticles failed to achieve the fully liquid state even after 4 h, resulting in liquid fractions of only 0.97 and 0.87, respectively. It has been revealed and proved that introducing graphene nanoparticles with 3 wt% stands out as the optimal approach.
Abstract
Phase change materials (PCMs) are a highly promising option for building and solar applications. However, the current limitation of PCMs in terms of poor thermal conductivity hinders their efficiency and utility. It is imperative to address this challenge head-on by developing novel approaches that can enhance the thermal conductivity of these materials. Recent studies have seldom found that the incorporation of different nanoparticle additives with various weight fractions, simultaneously, can effectively enhance the thermal conductivity of PCM. This study aims to investigate, in a first step, the impact of various types of nanoparticles added to a macro-encapsulated PCM and heated from one side. In particular, the effects of graphene, Al2O3, and CuO nanoparticles at a weight fraction of 3% have been examined to determine the most suitable nanoparticle. Based on the findings, the effect of nanoparticles added in different weight fractions within PCM has been further explored as a next step. The transient temperature profiles, velocity fields, velocity magnitude, melting front, and melt fractions have been thoroughly analyzed and discussed in detail. For instance, loading 3 wt% graphene nanoparticles to the pure PCM has led to a completely liquid state within just 3 h and 50 min, whereas the addition of 3 wt% Al2O3 and CuO nanoparticles failed to achieve the fully liquid state even after 4 h, resulting in liquid fractions of only 0.97 and 0.87, respectively. It has been revealed and proved that introducing graphene nanoparticles with 3 wt% stands out as the optimal approach.
Kapitel in diesem Buch
- Frontmatter I
- Preface V
- Contents IX
- 1 Impact of Hall current and aligned magnetic field on magnetized hybrid flow of MgO‐Ag/H2O over a movable slender needle 1
- 2 Optimization of entropy in bioconvective and reactive micropolar nanofluid flow with Arrhenius kinetics 23
- 3 CFD heat transfer study of nano-enhanced phase change material 45
- 4 Magnetothermal and magnetorheological nanofluids: simulation techniques, biomedical engineering applications, and potential health risks 71
- 5 Nanorefrigerants in engineering: advances, challenges, and insights from experimental and CFD simulations and potential applications 109
- 6 Interaction of Lorentz force on Darcy- Forchheimer hybrid nanofluid flow over a stretching sheet in a porous medium 165
- 7 Impact of motile microorganisms on 3D flow of non-Newtonian thermofluid induced by exponentially stretching sheet: biomedicine and engineering applications 181
- 8 Lattice Boltzmann simulation of copperwater nanofluid 217
- 9 Stagnation point flow of MHD nanofluid over an exponentially stretching sheet with radiation 237
- 10 Entropy analysis of Al2O3/water nanofluid in viscous fluid flow with Joule heating and viscous dissipation over a permeable radiated stretching disk: a comparative study of nanoparticle shapes 261
- 11 Solar-powered magnetoelectrokinetic peristaltic transport of thermally radiative Jeffrey nanofluids in asymmetric porous media 289
- 12 Magnetized nanofluids flow in porous enclosures containing elliptical cylinder of varying aspect ratios 319
- 13 Dufour and Soret effects on nanofluid over an exponentially stretching sheet with chemical reaction 337
- 14 Heat transfer in dissipative water-based hybrid nanofluid under radiation phenomenon via OHAM 357
- 15 Heat and mass transfer analysis of Casson hybrid nanofluid flow over a stretching sheet with velocity slip and suction/injection 379
- Index 395
Kapitel in diesem Buch
- Frontmatter I
- Preface V
- Contents IX
- 1 Impact of Hall current and aligned magnetic field on magnetized hybrid flow of MgO‐Ag/H2O over a movable slender needle 1
- 2 Optimization of entropy in bioconvective and reactive micropolar nanofluid flow with Arrhenius kinetics 23
- 3 CFD heat transfer study of nano-enhanced phase change material 45
- 4 Magnetothermal and magnetorheological nanofluids: simulation techniques, biomedical engineering applications, and potential health risks 71
- 5 Nanorefrigerants in engineering: advances, challenges, and insights from experimental and CFD simulations and potential applications 109
- 6 Interaction of Lorentz force on Darcy- Forchheimer hybrid nanofluid flow over a stretching sheet in a porous medium 165
- 7 Impact of motile microorganisms on 3D flow of non-Newtonian thermofluid induced by exponentially stretching sheet: biomedicine and engineering applications 181
- 8 Lattice Boltzmann simulation of copperwater nanofluid 217
- 9 Stagnation point flow of MHD nanofluid over an exponentially stretching sheet with radiation 237
- 10 Entropy analysis of Al2O3/water nanofluid in viscous fluid flow with Joule heating and viscous dissipation over a permeable radiated stretching disk: a comparative study of nanoparticle shapes 261
- 11 Solar-powered magnetoelectrokinetic peristaltic transport of thermally radiative Jeffrey nanofluids in asymmetric porous media 289
- 12 Magnetized nanofluids flow in porous enclosures containing elliptical cylinder of varying aspect ratios 319
- 13 Dufour and Soret effects on nanofluid over an exponentially stretching sheet with chemical reaction 337
- 14 Heat transfer in dissipative water-based hybrid nanofluid under radiation phenomenon via OHAM 357
- 15 Heat and mass transfer analysis of Casson hybrid nanofluid flow over a stretching sheet with velocity slip and suction/injection 379
- Index 395
