The effect of nano encapsulated phase change materials and nanoparticles on turbulent heat transport: A conical diffuser scenario

Iachachene, Farida; Haddad, Zoubida; Arıcı, Müslüm; Abu‐Nada, Eiyad; Sheremet, Mikhail А.

doi:10.1016/j.est.2022.104703

Cited by 10 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The turbulent kinetic energy ( k ) and dissipation rate ( ε ) are: 14–16 where, v eff = v f + v t , and .…”

Section: Model Descriptions and Numerical Methodsmentioning

confidence: 99%

“…11–13 The flow of air in the high-temperature surrounding rock is mainly turbulent flow, and great progress has been made in understanding the heat-transfer characteristics of turbulent flow. For instance, Farida 14 studied the turbulent flow of single and mixed nanofluids in a star follower diffuser, and investigated their pressure drop and heat-transfer properties; while Alsabery 15 used the finite element method based on the standard k – ε equation to numerically solve the effects of the Reynolds number, wave number, and wave amplitude on fluid motion and energy transport. Also, Miroshnichenko 16 reviewed the numerical and experimental studies of turbulent flow, taking into account the characteristics of turbulent flow in rectangular cavities under different initial and boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heat-transfer enhancement and optimization design of a roadway with typical angles using field synergy theory

Qu,

Zhang,

Zhang

et al. 2024

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

“…The turbulent kinetic energy ( k ) and dissipation rate ( ε ) are: 14–16 where, v eff = v f + v t , and .…”

Section: Model Descriptions and Numerical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat-transfer enhancement and optimization design of a roadway with typical angles using field synergy theory

Qu,

Zhang,

Zhang

et al. 2024

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Ref. [27] investigated the turbulent flow of single and hybrid nanofluids in a conical diffuser. Heat transfer coefficients and pressure losses are examined for various Reynolds numbers and nanoparticle volume fractions.…”

Section: Introductionmentioning

confidence: 99%

Studying the Improvement of Solar Collector Mechanism with Phase Change Materials

Rahi,

Ostadi,

Rahmani

et al. 2024

Energies

View full text Add to dashboard Cite

This study delves into the integration of phase change materials (PCM) in solar thermal collector systems to address this challenge. By incorporating nano encapsulated PCMs, researchers have mitigated concerns surrounding PCM leakage, revolutionizing the potential of solar collector systems to elevate energy efficiency, diminish carbon emissions, and yield manifold benefits. This article comprehensively investigates the design and utilization of solar phase change energy storage devices and examines the transformative impact of employing nano-coated phase change materials (Nano capsules) to augment solar collector performance. The integration of paraffin-based PCM and the insulation of the collector system have been crucial in optimizing heat retention and operational efficacy. The composition of the PCM involves a balanced blend of octadecane phase-change particles and water as the base fluid, designed to maximize thermal performance. Analysis of the experimental findings demonstrates the dynamic thermal behavior of the nano encapsulated phase change material, revealing distinctive temperature profiles about fluid dynamics and absorbent characteristics. Notably, the study emphasizes the nuanced trade-offs associated with the conductivity and melting temperature of the Nano encapsulated PCM, yielding valuable insights into energy storage capacity limitations and thermal performance variations throughout diurnal cycles. Central to the investigation, the optimal nanoparticle proportion is elucidated, shedding light on its pivotal role in modulating PCM performance. Furthermore, findings underscore the complex interplay between nanoparticle volume fraction and thermal fluid temperature, providing critical perspectives on optimizing PCM-enhanced solar collector systems.

show abstract

“…On the other hand, the figure of merit falls when the concentration of NEPCM rises. In a conical diffuser, Iachachene et al [ 22 ] investigated the turbulent flow of Al 2 O 3 , NEPCM, and a mixture of the two. The NEPCM nanofluid had the lowest pressure drop and the largest heat transfer improvements inside the diffuser, according to the findings of this investigation.…”

Section: Introductionmentioning

confidence: 99%

Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

et al. 2022

View full text Add to dashboard Cite

Energy saving has always been a topic of great interest. The usage of nano-enhanced phase change material NePCM is one of the energy-saving methods that has gained increasing interest. In the current report, we intend to simulate the natural convection flow of NePCM inside an inverse T-shaped enclosure. The complex nature of the flow results from the following factors: the enclosure contains a hot trapezoidal fin on the bottom wall, the enclosure is saturated with pours media, and it is exposed to a magnetic field. The governing equations of the studied system are numerically addressed by the higher order Galerkin finite element method (GFEM). The impacts of the Darcy number (Da = 10−2–10−5), Rayleigh number (Ra = 103–106), nanoparticle volume fraction (φ = 0–0.08), and Hartmann number (Ha = 0–100) are analyzed. The results indicate that both local and average Nusselt numbers were considerably affected by Ra and Da values, while the influence of other parameters was negligible. Increasing Ra (increasing buoyancy force) from 103 to 106 enhanced the maximum average Nusselt number by 740%, while increasing Da (increasing the permeability) from 10−5 to 10−2 enhanced both the maximum average Nusselt number and the maximum local Nusselt number by the same rate (360%).

show abstract

The effect of nano encapsulated phase change materials and nanoparticles on turbulent heat transport: A conical diffuser scenario

Cited by 10 publications

References 60 publications

Heat-transfer enhancement and optimization design of a roadway with typical angles using field synergy theory

Heat-transfer enhancement and optimization design of a roadway with typical angles using field synergy theory

Studying the Improvement of Solar Collector Mechanism with Phase Change Materials

Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

Contact Info

Product

Resources

About