Study on the effect of multiple spiral fins for improved phase change process

Duan, Juan; Xiong, Yongliang; Yang, Dan

doi:10.1016/j.applthermaleng.2020.114966

Cited by 64 publications

(5 citation statements)

References 43 publications

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“…Figure 3 shows the physical model from Ref. [24], which is used to validate our simulation method in this study. This PCM latent heat thermal energy storage system is composed of cylindrical annuluses with fins, and RT82 is used as the PCM.…”

Section: Mesh Independence and Model Validationmentioning

confidence: 99%

Numerical Investigation of Heat Transfer Characteristics of Trapezoidal Fin Phase Change Thermal Energy Storage Unit

Luo,

Yang,

et al. 2024

Processes

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In order to enhance the heat transfer performance of a phase change thermal energy storage unit, the effects of trapezoidal fins of different sizes and arrangement modes were studied by numerical simulation in the heat storage and release processes. The optimal enhancement solution was obtained by comparing the temperature distribution, instantaneous liquid-phase ratio, solid–liquid phase diagram and comprehensive heat storage and release performance of the thermal energy storage unit under different fin sizes. During the heat storage process, the results show that when the ratio of the length of the upper and lower base of the trapezoid h1/h2 is 1:9, the heat storage time is shortened by 9.03% and 18.21% compared with h1/h2 = 3:7 and 5:5, respectively. During the heat release process, the optimal heat transfer effect is achieved when h1/h2 = 5:5. To further improve the heat transfer effects, the energy storage unit is placed upside down; then, the least time is achieved when h1/h2 = 2:8. When heat storage and release are considered together, the energy storage unit with h1/h2 = 2:8 takes the shortest time to melt in upright placement and then to solidify in upside-down placement.

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Section: Mesh Independence and Model Validationmentioning

confidence: 99%

Numerical Investigation of Heat Transfer Characteristics of Trapezoidal Fin Phase Change Thermal Energy Storage Unit

Luo,

Yang,

et al. 2024

Processes

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“…Extensive work has been done to improve the geometries of these extended surfaces to increase the LTES performance. Helical or spiral fin structures have been investigated by Zhang et al [28], Duan et al [29], Mehta et al [30] and Lu et al [31]. In the work of Sciacovelli and Verda [27], Johnson et al [32,33] or Zhang and Chen [34] tree-shaped fins are studied.…”

Section: Introductionmentioning

confidence: 99%

“…The HTF properties are then reevaluated at the tube inner wall temperature from which a new heat transfer coefficient is calculated (Eq. [28][29][30][31][32][33][34][35].…”

mentioning

confidence: 99%

Characterization of a latent thermal energy storage heat exchanger using a charging time energy fraction method with a heat loss model

Couvreur

Beyne

Tassenoy

et al. 2023

Applied Thermal Engineering

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“…Abdulateef et al [ 40 ] found that the heat enhancement factor was directly proportional to the number and size of these fins. Duan et al [ 41 ] evaluated the influence of fins on phase change enhancement. The findings suggest that when the fin number is set, PCM’s total melting and solidification times in an annulus with spiral fins may be reduced by up to 57.60 and 74.13 percent, respectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Heat Transfer Enhancement within Confined Shell and Tube Latent Heat Thermal Storage Microsystem Using Hexagonal PCMs

et al. 2022

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Thermophoresis represents one of the most common methods of directing micromachines. Enhancement of heat transfer rates are of economic interest for micromachine operation. This study aims to examine the heat transfer enhancement within the shell and tube latent heat thermal storage system (LHTSS) using PCMs (Phase Change Materials). The enthalpy–porosity approach is applied to formulate the melting situation and various shapes of inner heated fins are considered. The solution methodology is based on the Galerkin finite element analyses and wide ranges of the nanoparticle volume fraction are assumed, i.e., (0% ≤ φ ≤ 6%). The system entropy and the optimization of irreversibility are analyzed using the second law of the thermodynamics. The key outcomes revealed that the flow features, hexagonal entropy, and melting rate might be adjusted by varying the number of heated fins. Additionally, in case 4 where eight heated fins are considered, the highest results for the average liquid percentage are obtained.

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Study on the effect of multiple spiral fins for improved phase change process

Cited by 64 publications

References 43 publications

Numerical Investigation of Heat Transfer Characteristics of Trapezoidal Fin Phase Change Thermal Energy Storage Unit

Numerical Investigation of Heat Transfer Characteristics of Trapezoidal Fin Phase Change Thermal Energy Storage Unit

Characterization of a latent thermal energy storage heat exchanger using a charging time energy fraction method with a heat loss model

Numerical Study of Heat Transfer Enhancement within Confined Shell and Tube Latent Heat Thermal Storage Microsystem Using Hexagonal PCMs

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