scholarly journals Natural convection in an internally finned phase change material heat sink for the thermal management of photovoltaics

2011 ◽  
Vol 95 (7) ◽  
pp. 1598-1603 ◽  
Author(s):  
M.J. Huang ◽  
P.C. Eames ◽  
B. Norton ◽  
N.J. Hewitt
Keyword(s):  
Natural Convection ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Heat Sink ◽  
Change Material

Numerical Study of Cyclic Melting and Solidification of Nano Enhanced Phase Change Material Based Heat Sink in Thermal Management of Electronic Components

2016 ◽  
Author(s):  
S. K. Sahoo ◽  
M. K. Das ◽  
P. Rath
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Forced Convection ◽  
Heat Sink ◽  
Volume Concentration ◽  
Nano Particles ◽  
Nano Particle ◽  
Electronic Components ◽  
Change Material

The Present investigation has been carried out to study the performance of nano enhanced phase change material (NEPCM) based heat sink for thermal management of electronic components. Enthalpy based finite volume method is used for the analysis of phase change process in NEPCM. To enhance the thermal conductivity of phase change material (PCM), copper oxide nano particles of volume fractions 1%, 2.5% and 5% are added to PCM. A heat flux of 2500 W/m2 is taken as input to the heat sink. The thermal performance of the heat sink with PCM is compared with NEPCM for each volume fraction of nano particle for both finned and unfinned configurations. It is observed that the nano particle volume concentration plays a major role in removing the heat from the chip in case of unfinned heat sink configuration. However, for finned heat sink configuration, the volume concentration effect is not appreciable. In addition, the performance of NEPCM based finned heat sink is studied under cyclic loading in both natural and forced convection boundary conditions. It is observed that under forced convection the solidification time is reduced.

scholarly journals Thermal management of photovoltaic panel with nano-enhanced phase change material at different inclinations

2021 ◽  
Author(s):  
UNNIKRISHNAN KARTHAMADATHIL SASIDHARAN ◽  
ROHINIKUMAR BANDARU
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Thermal Energy ◽  
Liquid Fraction ◽  
Maximum Enhancement ◽  
Conduction Heat Transfer ◽  
Change Material

Abstract Photovoltaic (PV) panel, coupled with phase change material (PCM), has attracted broad attention for the panel's thermal management. Despite the higher energy storage capability of PCMs, the main disadvantage is their low thermal conductivity which is compensated to an extent with the nano-enhanced PCMs (NEPCMs). In this study, numerical simulations are carried out to compare the natural convection phenomena and thermal response of PV-NEPCM with simple PV-PCM for various tilt angles. CuO nanoparticles with a 4% volume concentration are selected for NEPCM. The thermal performance of PV-NEPCM at inclinations of 0°, 15°, 30°, and 45\(^\circ\) are compared with a simple PV-PCM system. The average temperature of PV, liquid fraction and thermal energy stored in PCM, the PV efficiency are compared for PV-PCM and PV-NEPCM systems. Results show that the loading of nanoparticles increases the conduction heat transfer inside PCM. It has also been shown that at lower inclinations, the use of NEPCM is more effective due to the dominance of conduction heat transfer. At higher tilt angles, natural convection plays a significant role in the heat transfer mechanism inside PCM. By using NEPCM, the maximum decrease in PV temperature of 1.11\(℃\) and maximum improvement in the liquid fraction (7.6%) are achieved when \({\theta }=0^\circ\) compared to simple PCM. Enhancement of thermal energy stored in PCM increases slightly upon adding nanoparticles, and the highest improvement is obtained for \({\theta }=0^\circ .\) Maximum enhancement of PV efficiency is found to be 1.6% for \({\theta }=0^\circ\) inclination on adding nanoparticles at a fraction of 4 vol.%. Keywords: PV, nano-enhanced PCM, nanoparticles, natural convection, liquid fraction.

scholarly journals High porosity and light weight graphene foam heat sink and phase change material container for thermal management

2020 ◽  
Vol 31 (42) ◽  
pp. 424003 ◽  
Author(s):  
Abdelhafid Zehri ◽  
Majid Kabiri Samani ◽  
Martí Gutierrez Latorre ◽  
Andreas Nylander ◽  
Torbjörn Nilsson ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Management ◽  
Heat Sink ◽  
High Porosity ◽  
Light Weight ◽  
Graphene Foam ◽  
Change Material
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