Numerical Simulation and Optimization of the Melting Process of Phase Change Material inside Horizontal Annulus

Li, Saiwei; Chen, Yu; Sun, Zhiqiang

doi:10.3390/en10091249

Cited by 20 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the solidification time was longer in non-concentric DTHX, and consequently, the complete melting-solidification cycle was the shortest in concentric DTHX. However, Li et al [84] in their research took into account the volume expansion of the PCM during melting and consequently an air region at the top of the HX when the PCM was in the solid state. The results showed that lowering the inner tube did not influence the melting time of the PCM when the air region was taken into account.…”

Section: Double-tube Heat Exchangersmentioning

confidence: 99%

The Impact of Heat Exchangers’ Constructions on the Melting and Solidification Time of Phase Change Materials

et al. 2020

View full text Add to dashboard Cite

An application of latent heat thermal energy storage systems with phase change materials seems to be unavoidable in the present world. The latent heat thermal energy storage systems allow for storing excessive heat during low demand and then releasing it during peak demand. However, a phase change material is only one of the components of a latent heat thermal energy storage system. The second part of the latent heat thermal energy storage is a heat exchanger that allows heat transfer between a heat transfer fluid and a phase change material. Thus, the main aim of this review paper is to present and systematize knowledge about the heat exchangers used in the latent heat thermal energy storage systems. Furthermore, the operating parameters influencing the phase change time of phase change materials in the heat exchangers, and the possibilities of accelerating the phase change are discussed. Based on the literature reviewed, it is found that the phase change time of phase change materials in the heat exchangers can be reduced by changing the geometrical parameters of heat exchangers or by using fins, metal foams, heat pipes, and multiple phase change materials. To decrease the phase change material’s phase change time in the tubular heat exchangers it is recommended to increase the number of tubes keeping the phase change material’s mass constant. In the case of tanks filled with spherical phase change material’s capsules, the capsules’ diameter should be reduced to shorten the phase change time. However, it is found that some changes in the constructions of heat exchangers reduce the melting time of the phase change materials, but they increase the solidification time.

show abstract

Section: Double-tube Heat Exchangersmentioning

confidence: 99%

The Impact of Heat Exchangers’ Constructions on the Melting and Solidification Time of Phase Change Materials

et al. 2020

View full text Add to dashboard Cite

show abstract

“…They considered three configurations and found significant improvement in PCM thermal performance for the case of the proposed webbed tube heat exchanger as compared with shell‐and‐tube heat exchanger, multitube heat exchanger, and triplex tube heat exchanger. Li et al 16 studied numerical simulation and optimization of the melting process of PCM inside the horizontal annulus. They considered the eccentricity, diameter of the inner tube, subcooling degree of the PCM, and heating‐surface temperature.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the shell configuration effect on the melting of various phase change materials in the presence of porous medium and non‐Newtonian fluid

Azarbarzin

Javaherdeh

2023

Heat Trans

View full text Add to dashboard Cite

By considering the ability of phase change materials (PCMs) in the storage of energy, the melting of four types PCMs including RT22, RT26, RT35, and RT41 in a heat exchanger is examined in this research. The impact of various shell cross‐sectional configurations on the complete melting time of materials, temperature changes, and liquid fraction throughout the melting process are presented. It is assumed that the main heat transfer fluid in the tube is non‐Newtonian and the tube is filled with a porous medium. The enthalpy porosity manner is applied for simulating the process of phase change and the heat natural convection and conduction cases are discussed. On the basis of the obtained results, the decrease in complete melting time is about 20% compared with the absence of a porous medium in the circular cross‐section configuration. The shell configuration has a noticeable impact on the reduction of the required time for melting. In the square cross‐section configuration, RT22 has the lowest melting time, as well as RT41 has the longest melting time in the inverted triangular cross‐section configuration in which the maximum time difference for RT22 is about 77% less. So, the best cross‐section for the shortest complete melting time is square.

show abstract

“…Delgado-Diaz et al [14] studied how to compare compactness and heat transfer performance for latent heat energy storage (LHES) modules with different designs. Li et al [15] observed the melting of phase change material inside a horizontal annular space using numerically simulation as well as optimizing.…”

Section: Introductionmentioning

confidence: 99%

Melting Characteristics of a Phase Change Material Mixed with Nano Particles of Cobalt Oxide Bounded in a Trapezoidal Structure

Ali¹,

Shaikh²,

Shah³

et al. 2022

Computer Modeling in Engineering &Amp; Sciences

View full text Add to dashboard Cite

A novel trapezoidal design for storage of heat energy through melting of phase-change material (PCM) is investigated. Latent heat thermal energy storage system (LHTES) is a promising option to diminish mis-match between energy consumption and supply. For this purpose, Paraffin: Rubitherm-35 (RT35) material is successively melted in aluminum structure which is heated from one side and the other sides are kept adiabatic. Melting of PCM is observed experimentally and melt fronts are photographed for various time lengths. The fluid-solid module in COMSOL Multiphysics 5.4 has been utilized. The transient heat conduction with enthalpy function is hired. Simulations are carried out for enhancement of thermal conductivity through addition of nano-entities of cobalt oxide Co 3 O 4 . The melting time is notably reduced with inclusion of nano-entities to enhance thermal conductivity. The time spans for melt start and total melt in case of pure PCM are 375 and 4500 (s) respectively whereas for the nano mix case, these are 150 and 3000 s. Thus 33% shorter time length is noticed for charging of the PCM trapezoidal matrix with nano entities of Co 3 O 4 are mixed. The results from simulation and lab observations depict similar patterns and are in quite close comparison.

show abstract

Numerical Simulation and Optimization of the Melting Process of Phase Change Material inside Horizontal Annulus

Cited by 20 publications

References 27 publications

The Impact of Heat Exchangers’ Constructions on the Melting and Solidification Time of Phase Change Materials

The Impact of Heat Exchangers’ Constructions on the Melting and Solidification Time of Phase Change Materials

Numerical investigation of the shell configuration effect on the melting of various phase change materials in the presence of porous medium and non‐Newtonian fluid

Melting Characteristics of a Phase Change Material Mixed with Nano Particles of Cobalt Oxide Bounded in a Trapezoidal Structure

Contact Info

Product

Resources

About