THERMAL PERFORMANCE ENHANCEMENT OF PARAFFIN WAX WITH AL2O3 AND CuO NANOPARTICLES – A NUMERICAL STUDY

Amirtham, Valan Arasu; Sasmito, Agus P.; Mujumdar, Arun S.

doi:10.5098/hmt.v2.4.3005

Cited by 26 publications

(13 citation statements)

References 23 publications

(26 reference statements)

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“…This negative effect attributed to the fact that viscosity of Ne-PCM increases significantly as nanoparticle concentration increased. A similar observation is also found in the previous studies[33,33]. The increase in viscosity reduces the buoyancy and leads to the slower melting process since the melting process is dominated by natural convection.…”

supporting

confidence: 89%

Heat pipe with nano enhanced-PCM for electronic cooling application

Jayant

Kishore

Solomon

2017

Experimental Thermal and Fluid Science

182

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supporting

confidence: 89%

Heat pipe with nano enhanced-PCM for electronic cooling application

Jayant

Kishore

Solomon

2017

Experimental Thermal and Fluid Science

182

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“…As thermal conductivity increased, the melting point of the material decreased. The addition of CuO nanoparticles to a fluid can increase its thermal conductivity and enhancement its heat transfer (Arasu et al, 2012;Vanaki et al, 2016). As seen in Figure 6, the melting temperature of the nano-PCM slowly decreased.…”

Section: Thermal Conductivity Of Beeswax/cuomentioning

confidence: 95%

“…It can be seen that adding CuO nanoparticles impaired the latent heat of beeswax. Accordingly, Arasu et al (2012) investigated the reduction in latent heat caused by the friction factor between the nanoparticles and the fluid when PCM was melted. The addition of CuO nanoparticles also reduced the stability of nano-PCM due to agglomeration and sedimentation.…”

mentioning

confidence: 99%

Thermal Properties of Beeswax/CuO Nano Phase-change Material Used for Thermal Energy Storage

Putra

Prawiro²,

Amin³

2016

IJTech

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Experimentation on and implementation of phase-change materials for thermal storage is attracting increasing attention by those seeking a potential resolution to energy issues. This study investigates beeswax as a high thermal-capacity phase-change material with the objective of analyzing the thermal properties and behaviors of beeswax/CuO nano-PCM. The study uses differential scanning calorimetry apparatus to measure the melting temperature and thermal capacity of nano-PCMs. The study found nano-PCM melting temperatures of 63.62°C, 63.59°C, 63.66°C, 63.19°C, and 62.45°C at 0.05, 0.1, 0.15, 0.2, and 0.25 wt%, respectively. FTIR testing found no chemical reaction between CuO and beeswax. The existence of CuO nanoparticles enhanced thermal conductivity of beeswax but reduced its heat capacity. However, the change in latent heat caused no significant effects in the performance of beeswax/CuO. Thus, the results showed that heat transfer of composite beeswax/CuO melts faster than base phase-change material.

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“…However, paraffin wax has competing applications in heating, lighting and lubrication, where sugarcane wax currently is perceived solely as a waste product. The performance of melting and solidification process and thermal conductivity of paraffin wax was greatly improved with nano−dispersion of Al 2 O 3 compared to that of CuO (Arasu et al., 2011). However, no study has yet quantified the thermal performance of Al 2 O 3 nanoparticles in sugarcane wax, nor the thermal gradients present in the PCM integrated into a working PV panel.…”

Section: Introductionmentioning

confidence: 99%

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Tangsiriratana

Skolpap

Patterson

et al. 2019

Heliyon

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In this study, a micro-encapsulated phase change material (PCM) was composed of sugarcane wax−Al 2 O 3 composite as the core material and gelatin−gum Arabic as the polymer shell materials prepared by complex coacervation. The thermal behavior of solar panels integrated with this encapsulated PCM (EPCM) was investigated. The heat storage-dissipation performance and thermal stability of the sugarcane wax−based composite PCM layer with the heat capacity of 2.86 J/g·°C was influenced by its thickness. Increasing the composite PCM layer thickness from 4 mm to 7 mm could lower the module's front-facing glass temperature by 4% resulting in enhanced the photovoltaic power generation by 12% at the peak, because of the temperature storage ability of the composite PCM. Moreover, the thermal conductivity of the microencapsulated sugarcane wax was calculated using a steady-state one-dimensional energy balance equation. The thermal conductivities estimated across the composite PCM layer depth were found to be temperature dependent. A nonlinear regression of the power law thermal conductivity model gave a good agreement with the observed EPCM-surface temperatures.

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THERMAL PERFORMANCE ENHANCEMENT OF PARAFFIN WAX WITH AL2O3 AND CuO NANOPARTICLES – A NUMERICAL STUDY

Cited by 26 publications

References 23 publications

Heat pipe with nano enhanced-PCM for electronic cooling application

Heat pipe with nano enhanced-PCM for electronic cooling application

Thermal Properties of Beeswax/CuO Nano Phase-change Material Used for Thermal Energy Storage

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

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