Heat transfer treatment of system during freezing with implement of nanoparticles

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 58, С. 104410 - 104410

Опубликована: Апрель 18, 2024

The present attempt investigates solidification through a tank equipped with T-shaped fins, crucial aspect of cold storage technology. Utilizing the Finite Element Method (FEM) for simulation, implementation mesh adaptation technique enhances accuracy modeling. Equations are derived based on assumption neglecting velocity effects during solidification, simplifying mathematical framework analysis. Validation numerical approach is conducted comparisons previously published works, affirming reliability methodology. A notable study utilization nanosized powders dispersed within water, serving to bolster system performance. This innovative water conductivity, thereby augmenting rate storage. Employing greater shape factor yields promising results, leading discernible decrease in completion time by approximately 10.6%, attributed heightened conductivity facilitated nanomaterial. Furthermore, investigation explores impact varying volume fractions particles time, revealing significant reduction 32.78% higher particle volumes.

Язык: Английский

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Heat transfer during discharging of NEPCM through the finned container

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 57, С. 104287 - 104287

Опубликована: Март 24, 2024

To maximize the efficiency of freezing, combinations using nanoparticles and fins have been utilized in current work. Incorporating nanofluids into solidification processes provides a refined efficient approach to transitioning materials from liquid solid state. Triangular container involving has implemented. The shape fraction were varied this research. derived equations solved via finite element method associated code validated based on prior article. reduction freezing time was presumed as main goal research resource utilization various industries. As greater amount nano-powders is utilized, conduction becomes stronger rate improves about 27%. Also, altering particles applying powders with bigger m can lead by 7%.

Язык: Английский

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Evaluation of thermal storage system during freezing and loading nano-powders

Journal of Thermal Analysis and Calorimetry, Год журнала: 2024, Номер 149(11), С. 5595 - 5609

Опубликована: Май 27, 2024

Abstract In pursuit of advancing the efficiency cold energy storage, a uniquely designed curved container has been employed, filled with water-nanoparticle mixtureQ. The is equipped fins, strategically leveraging enhanced conduction facilitated by presence nanoparticles. simulation intricate unsteady phenomena in this study conducted using finite element technique, providing robust analytical framework. incorporation an adaptive grid ensures refined resolution, particularly vicinity ice front region. nanoparticle fraction ( ϕ ) emerges as pivotal factor directly influencing rate solidifying. dispersion nano-powders leads to noteworthy reduction completion time, demonstrating substantial 33.21% improvement. diameter (dp) introduces diverse effects on solidification process, primarily due its significant influence conductivity nanomaterial. An in-depth exploration impact dp reveals compelling insights. As increases from smallest size 40 nm, there commendable 15.12% required freezing time. However, subsequent increment beyond threshold results notable 36.56% increase findings presented here not only contribute fundamental understanding processes but also hold practical implications for design and optimization storage systems.

Язык: Английский

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Analyzing porous cold storage unit in presence of hybrid nano-powders considering Galerkin method

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 61, С. 104899 - 104899

Опубликована: Авг. 2, 2024

The article presents a comprehensive simulation study on cold storage porous containers, employing the Galerkin method to analyze their thermal behavior. A key focus of investigation is incorporation both radiation and conduction modes within mathematical model, acknowledging significant roles in freezing process. To enhance rate, hybrid nanoparticles are introduced into H2O, aiming speed up solidification. Notably, integrates adaptive grid techniques achieve higher modeling accuracy, with verification processes confirming high level agreement between results experimental data. This research also underscores potential for improved energy efficiency systems, contributing sustainability natural resources by reducing consumption enhancing overall systems. Through meticulous examination, explores impacts various factors freezing, including fraction nano-powders (ϕ), porosity (γ), factor (Rd). Remarkably, introduction media causes substantial increment resulting an improvement approximately 91.19 %. Moreover, inclusion term model significantly reduces completion time 30.85 %, underscoring importance considering effects such Additionally, dispersing water, decrement around 7.21 approach highlights optimizing use applications, thereby promoting conservation sustainable management resources.

Язык: Английский

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Efficacy of dispersing nano-powders on rate of cold storage during solidification considering transient conduction

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 57, С. 104296 - 104296

Опубликована: Март 23, 2024

This study conducts a simulation of the freezing through container featuring finned sinusoidal geometry. The application Galerkin method effectively captures intricate dynamics unsteady processes, showcasing significant enhancement by introducing nanoparticles to augment system's thermal conductivity—an essential element for optimizing conduction efficiency. numerical approach underscores importance employing an adaptive grid in scenarios, tailoring based on solid front's position due heightened scalar gradients. Various powder diameters (dp) and fractions (ϕ) are systematically investigated, elucidating their distinct impacts process duration. Results reveal that initial increase dp causes decrement period 19.93%, followed subsequent rise 49.06%, specifically scenarios with 0.04 nanoparticle concentration. incorporation yields noteworthy 41.13% decrease solidification time when optimal sizes utilized. In contrast, without additives is 278.95s, reduced 164.19s introduction optimally sized powders.

Язык: Английский

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Development of numerical code for mathematical simulating of unsteady solidification phenomena in existence of nanomaterial

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 56, С. 104259 - 104259

Опубликована: Март 13, 2024

This research zeroes in on improving the freezing process by synergistically employing a wavy wall and fins. To enhance cold penetration, phase change material (PCM) is enriched with nanoparticles, single-phase model adopted due to low nanoparticle concentration. The numerical simulations leverage Galerkin method validation procedure affirms precision of code, extensively evaluating impacts ϕ (concentration additives) dp (particle diameter). With an increase particle diameter (dp), there initial 19.76% decrease required time, succeeded subsequent 50.56% when = 0.04. Furthermore, escalation results 11.04%, 40.91%, 26.36% reduction completion time for values 50, 40, 30 nm, respectively. Without inclusion powders, solidification lasts 84.8 s. However, introduction optimal powder size, this duration significantly reduces 50.1 emphasizes efficiency improvements attained through strategic integration wall, fins, PCM infused nanoparticles.

Язык: Английский

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Unsteady heat transfer during cold storage process utilizing numerical approach

Journal of Energy Storage, Год журнала: 2024, Номер 91, С. 111969 - 111969

Опубликована: Май 22, 2024

Язык: Английский

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Thermal analysis of cold saving system via numerical modeling incorporating nanomaterial

Journal of Thermal Analysis and Calorimetry, Год журнала: 2024, Номер unknown

Опубликована: Сен. 25, 2024

Язык: Английский

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Thermal assessment of cold storage process involving nanomaterial via numerical approach

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 60, С. 104805 - 104805

Опубликована: Июль 14, 2024

The primary aim of this study is to extend a numerical approach aimed at improving the efficiency solidification process. Two key strategies, namely scattering nano-powders and installation fins, were employed intensify freezing. By approximating neglecting influence velocity terms, final equations streamlined form mathematical model. To enhance accuracy, mesh adaptation was integrated with Galerkin method for solving Various scenarios examined assess impression both shape concentration on A significant correlation observed between additives conduction, causing in decrement required time by approximately 32.8 %. Furthermore, modifying selecting those higher factor substantially improved freezing efficiency, resulting an increase 10.89

Язык: Английский

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Increment of solidification rate due to radiation and conduction mechanism in existence of porous container filled with nanomaterial

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 61, С. 104850 - 104850

Опубликована: Июль 18, 2024

In current study, Galerkin techniques have been utilized to model the freezing behavior of a cold storage unit. The system features fins and porous foam, enhancing its efficiency in solidifying liquids. Additionally, hybrid nanoparticles introduced into water improve conductivity. energy equation has augmented with new term for radiation mode, alongside source freezing. With goal determining amounts scalars at each node, consists two equations. Mesh adaptation employed accommodate dynamic nature process. Validation against previous data demonstrates good agreement, bolstering reliability simulation. introduction foam domain results significant enhancement rate, an increase about 90.75 %. Furthermore, scenarios without mixing nano-powders surge factor contribute notable reductions completion time, decreases approximately 12.52 % 8 %, respectively. By combining all these techniques, considerable reduction solidification time can be achieved, amounting around 91.46 This highlights importance comprehensive approach improving efficiency. units through advanced this research contributes sustainable use natural resources, highlighting potential reducing consumption minimizing environmental impact.

Язык: Английский

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