Graphene enhanced paraffin nanocomposite based hybrid cooling system for thermal management of electronics

Joseph, Mathew; Sajith, V.

doi:10.1016/j.applthermaleng.2019.114342

Cited by 47 publications

(7 citation statements)

References 60 publications

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“…Paraffin wax PT-58 phase change material is utilized as latent heat storage material. The melting temperature of PT-58 was 58-60 • C as mentioned in literature [14]. Copper metal foam of dimensions 100 × 100 × 25 mm is employed as thermal conductivity enhancer.…”

Section: Methodsmentioning

confidence: 99%

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Passive Cooling Analysis of an Electronic Chipset Using Nanoparticles and Metal-Foam Composite PCM: An Experimental Study

et al. 2022

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Thermal management of electronic components is critical for long-term reliability and continuous operation, as the over-heating of electronic equipment leads to decrement in performance. The novelty of the current experimental study is to investigate the passive cooling of electronic equipment, by using nano-enriched phase change material (NEPCM) with copper foam having porosity of 97%. The phase change material of PT-58 was used with graphene nanoplatelets (GNPs) and magnesium oxide (MgO) nanoparticles (NPs), having concentrations of 0.01 wt.% and 0.02 wt.%. Three power levels of 8 W, 16 W, and 24 W, with corresponding heating inputs of 0.77 kW/m2, 1.54 kW/m2 and 2.3 kW/m2, respectively, were used to simulate the heating input to heat sink for thermal characterization. According to results, at 0.77 kW/m2 heating input the maximum base temperature declined by 13.03% in 0.02 wt.% GNPs-NEPCM/copper foam case. At heating input of 1.54 kW/m2, the maximum base temperature reduction of 16% was observed in case of 0.02 wt.% GNPs-NEPCM/copper foam and 13.1% in case of 0.02 wt.% MgO-NEPCM/copper foam. Similarly, at heating input of 2.3 kW/m2, the maximum temperature of base lessened by 12.58% in case of 0.02 wt.% GNPs-NEPCM/copper foam. The highest time to reach the set point temperature of 50 °C, 60 °C, and 70 °C was in case of GNPs-NEPCM/copper foam composites, while at all power levels MgO-NEPCM/copper foam gave comparable performance to GNPs based composite. Similar trend was observed in the study of enhancement ratio in operation time. From the results, it is concluded that the copper foam incorporation in NEPCM is an effective measure to mitigate the heat sink base temperature and can provide best cooling efficiency at low and higher heating loads.

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Section: Methodsmentioning

confidence: 99%

“…Pure PCM-based heat sink was recommended for higher set point temperatures. Joseph and Smith [14] explored the hybrid cooling using heat sink filled with graphene/paraffin NEPCM and forced convection. Thermal conductivity of PCM enhanced by 60% for 0.5 wt.% of graphene nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Passive Cooling Analysis of an Electronic Chipset Using Nanoparticles and Metal-Foam Composite PCM: An Experimental Study

et al. 2022

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“…In another study, Joseph et al synthesized the paraffin/graphene composite with diverse concentration and graphene by liquid-phase exfoliation. 70 The thermal response of heat sink with paraffin and paraffin/ graphene were compared devoid of paraffin for hybrid and passive cooling mode configurations. Thermal performance of heat sink graphene/paraffin was far superior to heat sink paraffin and without paraffin in term of all thermal loading scenarios.…”

Section: Graphene-related Pcms (Paraffin)mentioning

confidence: 99%

“…In another study, Joseph et al synthesized the paraffin/graphene composite with diverse concentration and graphene by liquid‐phase exfoliation 70 . The thermal response of heat sink with paraffin and paraffin/graphene were compared devoid of paraffin for hybrid and passive cooling mode configurations.…”

Section: Synthesis Of Graphene Go and Reduced Gomentioning

confidence: 99%

A mini review on paraffin‐graphene and related hybrid phase change materials for building energy applications

et al. 2022

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The thermal energy management in building is gaining the significant attention in the present energy scenario to manage the temperature. Graphene‐related additives are known for their exceptional properties viz. excellent binding and high intrinsic thermal conductivity. The hybrid phase change materials (PCMs) with graphene additives have been applied to enhance the thermal conductivity. Graphene‐related materials are drastically used to improve the properties of PCMs. Incorporating graphene‐related fillers increase the thermal conductivity and preserve the latent heat storage ability of hydrocarbon‐based PCMs. Also, graphene‐related fillers can prevent the leaching properties of the PCMs. These composites can ease concerns regarding energy demand to some level by reversibly storing an incredible quantity of renewable as well as sustainable thermal energy helping to keep up thermal comfort and this has motivated authors to write present mini review. In this review, authors have described PCMs, preparation methods, graphene, graphene oxide, and their composite related PCMs, nanographene added PCMs and their applications in building envelopes utilizing graphene and relative additives.

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“…Another study proposed the energy recycling and self-sufficient application of an LED integrated with a thermoelectric generator module and electrical fan [ 33 ]. Moreover, graphene has been employed as a novel material in several investigations [ 34 , 35 ]. Some researchers have considered the thermophysical properties and forced convective heat transfer performance of graphene [ 36 , 37 ] and reviewed the applications of graphene [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution

Chung

Lin

2021

Nanomaterials

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Electric devices have evolved to become smaller, more multifunctional, and increasingly integrated. When the total volume of a device is reduced, insufficient heat dissipation may result in device failure. A microfluidic channel with a graphene solution may replace solid conductors for simultaneously supplying energy and dissipating heat in a light emitting diode (LED). In this study, an automated recycling system using a graphene solution was designed that reduces the necessity of manual operation. The optical power and temperature of an LED using this system was measured for an extended period and compared with the performance of a solid conductor. The temperature difference of the LED bottom using the solid and liquid conductors reached 25 °C. The optical power of the LED using the liquid conductor was higher than that of the solid conductor after 120 min of LED operation. When the flow rate was increased, the temperature difference of the LED bottom between initial and 480 min was lower, and the optical power of the LED was higher. This result was attributable to the higher temperature of the LED with the solid conductor. Moreover, the optical/electric power transfer rate of the liquid conductor was higher than that of the solid conductor after 120 min of LED operation, and the difference increased over time.

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Graphene enhanced paraffin nanocomposite based hybrid cooling system for thermal management of electronics

Cited by 47 publications

References 60 publications

Passive Cooling Analysis of an Electronic Chipset Using Nanoparticles and Metal-Foam Composite PCM: An Experimental Study

Passive Cooling Analysis of an Electronic Chipset Using Nanoparticles and Metal-Foam Composite PCM: An Experimental Study

A mini review on paraffin‐graphene and related hybrid phase change materials for building energy applications

Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution

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