Heat Transfer Correlations for a Composite PCM Based 72 Pin Fin Heat Sink with Discrete Heating at the Base

Srikanth, R.; Balaji, C.

doi:10.1007/s41403-017-0024-x

Cited by 12 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous shapes of cross-sections of fins are described in the literature, e.g. drop-shaped or circular [8][9][10][11][12]. Various Reynolds numbers and geometrical configurations of pinfins were considered by Saha and Acharya [13] in a numerical study that was carried out to analyse the unsteady threedimensional flow and heat transfer in a parallel-plate channel of a heat exchanger with in-line arrays of periodically mounted pins of rectangular cross-section.…”

Section: Introductionmentioning

confidence: 99%

Pin-fin metal alloy structures enhancing heat transfer in PCM-based heat storage units

et al. 2020

View full text Add to dashboard Cite

PCMs (phase change materials) applied in heat storage technology are on the one hand characterised by relatively large specific heat capacity, and on the other hand by relatively low thermal conductivity (e.g. 0.2 W•m −1 •K −1) for paraffin), which prolongs the charging/discharging cycles of heat accumulators based on such materials. In order to improve the heat transfer within PCMs, spatially shaped pin-fin metal alloy structures are being developed that have been immersed in the PCM material. Pin-fin metallic structures can be manufactured via investment casting technology. The 3D structures produced using this technique can be modified and adjusted in order to improve the heat transfer parameters (heat conductivity, specific heat transfer area). For this study, complex metal alloy pin-fin structures were immersed in paraffin, and an experimental test stand was built in order to examine the heat transfer characteristics of composite PCMs with pin-fin metal structures. Multiple heating/cooling cycles confirmed the enhanced transfer of heat inside the heat storage unit and allowed us to ascertain the decreased temperature gradient within the heat accumulator. The heat transfer phenomenon was simulated to show heating and melting course nearby metal inserts and confirm the beneficial influence of the applied pin-fin geometry, that can be further optimized. The thermal behaviour of the PCM, tested with DSC and TGA analysis, was used as an input for the simulation.

show abstract

Section: Introductionmentioning

confidence: 99%

Pin-fin metal alloy structures enhancing heat transfer in PCM-based heat storage units

et al. 2020

View full text Add to dashboard Cite

show abstract

“…(11) Srikanth and Balaji performed experiments to investigate the thermal performance of PCM-based cuboidal heat sinks with 72 pin-fins. (12) Heat transfer correlations were developed for the characteristic time for phase change with natural convection as a function of the individual power levels. Arshad et al examined the thermal performance of PCM-based pin-fin heat sinks having different pin-fin thicknesses of 1, 2, and 3 mm.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Thermal Performance of Phase Change Material-based Heat Sinks with Three-dimensional Transient Cooling

Jeong¹,

Lee²,

Kim³

2018

Sensors and Materials

View full text Add to dashboard Cite

A three-dimensional numerical model is constructed to examine the thermal performance of a phase change material (PCM)-based heat sink. The PCM is stored in a rectangular heat sink and a uniform heat flux is applied at the bottom of the heat sink. The PCM used in this model is paraffin wax and the heat sink is made of aluminum. Numerical transient simulations are conducted with different power levels (15, 20, and 25 W). As the power level increases, the melting rate increases and the melting time decreases. The convection of liquid PCM is observed by monitoring the temperature and velocity vector inside the PCM. During the melting process, the convection effect is enhanced by increasing the amount of molten PCM.

show abstract

“…Such inhomogeneous material where the physical properties including electrical, magnetic, mechanical, thermal and chemical vary along the specific axis is generally regarded as functionally graded material (FGM). It is noteworthy that some research identifies phase-change materials as reliable heatsink fin material for passive cooling of thermal components [21][22][23]. Nevertheless, the variation in the properties of FGM along any specific axis is based on porosity and pore-size-gradient structure, chemical-gradient structure and microstructural-gradient structure.…”

mentioning

confidence: 99%

Numerical Study of Performance of Porous Fin Heat Sink of Functionally Graded Material for Improved Thermal Management of Consumer Electronics

Oguntala

Sobamowo

Abd‐Alhameed

et al. 2019

IEEE Trans. Compon., Packag. Manufact. Technol.

View full text Add to dashboard Cite

The ever-increasing demand for high performance electronic and computer systems has unequivocally called for increased microprocessor performance. However, increasing microprocessor performance requires increasing the power and on-chip power density of the microprocessor, both of which are associated with increased heat dissipation. In recent times, thermal management of electronic systems has gained intense research attention due to increased miniaturization trend in the electronics industry. In the paper, we present a numerical study on the performance of a convective-radiative porous heat sink with functionally graded material for improved cooling of various consumer electronics. For the theoretical investigation, the thermal property of the functionally graded material is assumed as a linear and power-law function. We solved the developed thermal models using Chebyshev spectral collocation method. The effects of in-homogeneity index of FGM, convective and radiative parameters on the thermal behaviour of the porous heat sink are investigated. The present study shows that increase in the in-homogeneity index of FGM, convective and radiative parameter improves the thermal efficiency of the porous fin heat sink. The thermal predictions made in this study using Chebyshev spectral collocation method agrees excellently with the established results of Runge-Kutta with shooting and homotopy analytical method.

show abstract

Heat Transfer Correlations for a Composite PCM Based 72 Pin Fin Heat Sink with Discrete Heating at the Base

Cited by 12 publications

References 12 publications

Pin-fin metal alloy structures enhancing heat transfer in PCM-based heat storage units

Pin-fin metal alloy structures enhancing heat transfer in PCM-based heat storage units

Numerical Study of Thermal Performance of Phase Change Material-based Heat Sinks with Three-dimensional Transient Cooling

Numerical Study of Performance of Porous Fin Heat Sink of Functionally Graded Material for Improved Thermal Management of Consumer Electronics

Contact Info

Product

Resources

About