THERMAL PERFORMANCE OF µPCM/MWCNT COMPOSITES AT DIFFERENT AMBIENT TEMPERATURES

2015 ◽  
Vol 77 (21) ◽  
Author(s):  
Adli Zil Ikram Abdullah ◽  
Mohd Fadzli Bin Abdollah ◽  
Hilmi Amiruddin ◽  
Ahmad Kamal Mat Yamin ◽  
Norrefendy Tamaldin
Keyword(s):  
Thermal Management ◽  
Thermal Performance ◽  
Passive Cooling ◽  
Powder Metallurgy Technique ◽  
Mixed Powder ◽  
Ambient Temperatures ◽  
Microencapsulated Phase Change Material ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Change Material

The aim of this study is to investigate the effect of carbon-based materials on the thermal performance of microencapsulated phase-change material (µPCM) for passive cooling applications. The sample was prepared by mixing 5 wt. % of multi-walled carbon nanotubes (MWCNT) into µPCM using a powder metallurgy technique. The mixed powder was then compacted into a disc, having a diameter of 30 mm and a height of 5 mm, using a hot compaction technique. The samples were tested according to the modified ASTM standard. The experimental results demonstrated that the addition of MWCNT into µPCM enabled it to effectively absorb the heat emitted by the aluminium casing compared to pure µPCM. The model results indicated that the temperature of the aluminium could be maintained well at each ambient temperature by using the µPCM/MWCNT composite, thus showing that µPCM/MWCNT can potentially be used for passive thermal management in the future. 

scholarly journals Thermal management of mobile devices

2010 ◽  
Vol 14 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Weijan Shen ◽  
Fock-Lai Tan
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Mobile Devices ◽  
Thermal Management ◽  
Thermal Performance ◽  
Mobile Device ◽  
Phone Calls ◽  
Long Duration ◽  
Change Material

This paper presents the experimental study of using phase change material in the cooling of the mobile devices. It investigates the thermal performance of transient charging and discharging of mobile devices in three different situations; making phone calls frequently, making long duration calls, and making occasional calls. The results show that mobile devices are heated up fastest during the long duration usage. Experiments are also conducted to determine the effect of fins and effect of orientation of the mobile device on its thermal performance.

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