An experimental investigation of a PCM-based heat sink enhanced with a topology-optimized tree-like structure

Ho, Jin Yao; See, Yao Song; Leong, K.C.; Wong, Teck Neng

doi:10.1016/j.enconman.2021.114608

Cited by 72 publications

(18 citation statements)

References 44 publications

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“…This entails discretizing the design domain into finite elements and assigning each element a material pseudo-density, θ ∈ [0, 1], which functions as the design variable. Power and linear functions implemented SIMP method to scale material properties [26] by Equations ( 11)- (13), where the power function applied to interpolate the thermal conductivity reduces the contribution of intermediate values to heat transfer.…”

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

“…This study aimed to enhance the heat transfer of PCM in the LHTES unit by minimizing the global temperature distribution of the domain. According to the reference [17,26,27], the thermal compliance, which is characteristic of the dissipation of heat transfer capacity, was adapted to the objective function F by Equation ( 16).…”

Section: Objective Functionmentioning

confidence: 99%

“…Additionally, a hyperbolic tangent projection is used to reduce the gray area in-between the PCM-TCE domains. An in-depth description of the topology optimization techniques used in this study, including extensive details on the density filtering and projection methods, is given in reference [17,26].…”

Section: Other Descriptionsmentioning

confidence: 99%

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Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

et al. 2022

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To access the enhancement effect of the topology optimization and porous foam structure, numerical studies were conducted to investigate the heat conduction enhancement (by metal foam, graphite foam, topologically optimized fins, and combinations of metal foam and topologically optimized fins) of phase change material (PCM (n-octadecane)) based tubular thermal energy storage unit for spacecraft. The results showed that metal foam performed better than topologically optimized fins and a combination of metal foam and topology optimized fins, of which conductive material, unit mass, and volume fraction of PCM were the same. Graphite foam (140 W/(m·K)) had the best heat transfer enhancing effect, making PCM melt much faster than other enhancing methods investigated. A multi-criteria decision-making (MCDM) method integrated with the combined weight and TOPSIS method was introduced to evaluate the preferred alternatives’ performance based on the energy storage time, equivalent density, and energy storage. The evaluation pointed out that 3% topologically optimized aluminum fins with 98% copper foam had the best comprehensive performance. This study guided the optimal design of latent heat thermal energy storage units for spacecraft under microgravity.

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Section: Initial and Boundary Conditionsmentioning

confidence: 99%

Section: Objective Functionmentioning

confidence: 99%

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Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

et al. 2022

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“…Many researchers have taken an effort to bring down the temperature difference between melting PCM and electronic components to get better efficacy. Further to enhance the efficacy of PCMs researchers are investigating various geometries/orientation of fins [2][3][4][5][6] and other thermal conductive enhancer (TCE) methods, 7 both experimentally and numerically.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance assessment of phase change material for electronic cooling: An experimental investigation

Prashanth

Dandotiya

et al. 2022

Energy Storage

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In the present study, an experimental investigation is performed to check the performance of phase change material (PCM) OM42 for passive electronic cooling applications. Rectangular fins were used as PCM thermal conductivity enhancers (TCEs) to enhance the thermal conductivity of PCM. The experiments were performed (a) by maintaining the required input heat flux to the heater and (b) by maintaining the set point temperature (SPT) of the heater. The heater wattage controller was used to supply the required power to the heater and thermostat W1209 was used to control the SPT of the heater. The experiments were performed in the combination of PCM and fins, with fins only, With PCM only, and with PCM and fins. The obtained results signify improved performance of the heat sink when PCM with fins was used. At input heat flux of 1, 2, 3, 4 and 5 kW/m2 the heat sink reaches the critical temperature in 80, 60, 55, 50 and 40 minutes respectively in the absence of PCM without fins, but with the presence of PCM without fins and PCM with fins, the heater sink is well below the critical temperature for a complete charging cycle. At input heat flux of 4 and 5 kW/m2, the intensity of PCM melting rate is faster and hence solid‐liquid interface decreases quite rapidly as the buoyancy force dominates the viscous force since the volume of liquid PCM rises as the natural convection effect increases in the liquid region.

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“…Recent studies in the field of active and passive methods to improve the thermal performance [33][34][35][36][37][38][39][40][41][42][43][44][45]. …”

mentioning

confidence: 99%

Effect of two different nano-particles (GO-MoS₂) and a new micro-sprayer model on power electronic module for thermal management

Gholinia

Javidan

Hosseinpour

2022

Advances in Mechanical Engineering

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In this work, we have studied the performance of the cooling system with the presence of graphene oxide (GO) and molybdenum sulfide (MoS2) nanoparticles to reduce heat stress, increase the final efficiency, and maintain the reliability of Diode and IGBT electronic module. Beyond the geometric design of micro-sprays and dimensional changes, as well as the type of cooling fluid effect, the use of nanofluids for the purpose of thermal management of electronic systems will be an interesting and effective innovation. In the simulation parameters, the dimensional ratio of micro-sprays, the rate of cooling flows, and the volume fraction of nanoparticles were investigated. According to the results, considering the spray of the BSM-4N model and the input mass rate of 0.04 kg/s, by increasing the volume fraction of nanoparticles from 0.01 to 0.05, the heat transfer of nanofluid increases, thus leading to an increase in thermal efficiency. In this paper, the thermal effects of GO nanoparticle were significantly more favorable than those of MoS2 nanoparticle. In addition, it was found that by reducing the spray nozzle using installing the blade and simultaneous use of GO nanofluid with volume fraction of 0.05, the temperature inside the module is reduced below 323 K.

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An experimental investigation of a PCM-based heat sink enhanced with a topology-optimized tree-like structure

Cited by 72 publications

References 44 publications

Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

Thermal performance assessment of phase change material for electronic cooling: An experimental investigation

Effect of two different nano-particles (GO-MoS₂) and a new micro-sprayer model on power electronic module for thermal management

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An experimental investigation of a PCM-based heat sink enhanced with a topology-optimized tree-like structure

Cited by 72 publications

References 44 publications

Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

Comparative Study of the Thermal Enhancement for Spacecraft PCM Thermal Energy Storage Units

Thermal performance assessment of phase change material for electronic cooling: An experimental investigation

Effect of two different nano-particles (GO-MoS2) and a new micro-sprayer model on power electronic module for thermal management

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Product

Resources

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Effect of two different nano-particles (GO-MoS₂) and a new micro-sprayer model on power electronic module for thermal management