Thermal conductivity enhancement of ethylene glycol and water with graphene nanoplatelets

2016 ◽  
Vol 642 ◽  
pp. 32-38 ◽  
Author(s):  
C. Selvam ◽  
D. Mohan Lal ◽  
Sivasankaran Harish
Keyword(s):  
Thermal Conductivity ◽  
Ethylene Glycol ◽  
Graphene Nanoplatelets ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement

Synergistic thermal conductivity enhancement of PC/ABS composites containing alumina/magnesia/graphene nanoplatelets

2015 ◽  
Vol 38 (10) ◽  
pp. 2221-2227 ◽  
Author(s):  
Wei Yu ◽  
Huaqing Xie ◽  
Lifei Chen ◽  
Mingzhu Wang ◽  
Wenxia Wang
Keyword(s):  
Thermal Conductivity ◽  
Graphene Nanoplatelets ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement

Thermal Conductivity Enhancement of Ethylene Glycol-Based Suspensions in the Presence of Silver Nanoparticles of Various Shapes

2013 ◽  
Vol 136 (3) ◽  
Author(s):  
Xin Fang ◽  
Qing Ding ◽  
Li-Wu Fan ◽  
Zi-Tao Yu ◽  
Xu Xu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Ethylene Glycol ◽  
The Other ◽  
Thermal Conductivity Enhancement ◽  
Shape Effect ◽  
Conductivity Enhancement ◽  
Shape Dependence ◽  
Aspect Ratios ◽  
Relative Enhancement ◽  
Particle Shape Effect

In this technical brief, the effect of adding silver (Ag) nanoparticles of various shapes on the thermal conductivity enhancement of ethylene glycol (EG)-based suspensions was investigated experimentally. These included Ag nanospheres (Ag NSs), Ag nanowires (Ag NWs), and Ag nanoflakes (Ag NFs). Measurements of the thermal conductivity of the suspensions were performed from 10 to 30 °C at an increment of 5 °C. It was shown that the thermal conductivity of the EG-based suspensions increases with raising the temperature. The Ag NWs of a high aspect ratio (∼500) caused greatest relative enhancement up to 15.6% at the highest loading of nearly 0.1 vol. %, whereas the other two shapes of nanoparticles, Ag NSs and Ag NFs with much smaller aspect ratios, only led to enhancements up to 5%. The formation of a network of Ag NWs that facilitates heat conduction was likely responsible for their better performance. The relative enhancement was also predicted by the Hamilton-Crosser model that takes the particle shape effect into consideration. It was shown that the predictions far underestimate the thermal conductivity enhancements but are qualitatively consistent with their shape dependence. As a penalty, however, the presence of Ag NWs was shown to give rise to significant increase in the viscosity of the EG-based suspensions.

Thermal Conductivity Enhancement of Aluminium Oxide Nanofluid in Ethylene Glycol

2014 ◽  
Vol 660 ◽  
pp. 730-734 ◽  
Author(s):  
Khamisah Abdul Hamid ◽  
Wan Hamzah Azmi ◽  
Rizalman Mamat ◽  
Nur Ashikin Usri
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Thermal Properties ◽  
Ethylene Glycol ◽  
Volume Concentration ◽  
Conductivity Measurement ◽  
Thermal Conductivity Enhancement ◽  
Heat Transfer Fluid ◽  
Coolant Fluid ◽  
Conductivity Enhancement

Nanofluids are the new coolant fluid that has been widely investigates due to its ability to improved heat transfer better than conventional heat transfer fluid. The need to study the nanofluid properties has been increased to provide better understanding on nanofluid thermal properties and behavior. This study presents the measurement analysis on thermal conductivity enhancement of Al2O3 nanoparticles dispersed in ethylene glycol. The nanofluids are prepared using two step method for volume concentration range from 1.0 % to 4.0 %. The thermal conductivity measurement of the nanofluid is performed by KD2 Pro Thermal Properties Analyzer at working temperature range from 30 °C to 80 °C. The maximum enhancement in thermal conductivity is 21.1 % at volume concentration of 2.0 % and temperature of 70 °C. The results show that the thermal conductivity increases with the increase of nanofluid concentration and temperature. Also, the nanofluid shows enhancement in thermal conductivity compare to the base fluid.

scholarly journals Thermal Conductivity Enhancement of Al2O3 Nanofluid in Ethylene Glycol and Water Mixture

2015 ◽  
Vol 79 ◽  
pp. 397-402 ◽  
Author(s):  
N.A. Usri ◽  
W.H. Azmi ◽  
Rizalman Mamat ◽  
K. Abdul Hamid ◽  
G. Najafi
Keyword(s):  
Thermal Conductivity ◽  
Ethylene Glycol ◽  
Thermal Conductivity Enhancement ◽  
Water Mixture ◽  
Conductivity Enhancement ◽  
Al2o3 Nanofluid

scholarly journals Ultrasonic and thermophysical studies of ethylene glycol nanofluids containing TiO2 nanoparticles and their heat transfer enhancements

2020 ◽  
Author(s):  
Mohit Gupta ◽  
Devraj Singh ◽  
Shakti Pratap Singh ◽  
Ashish Mathur ◽  
Shikha Wadhwa ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Ethylene Glycol ◽  
Tio2 Nanoparticles ◽  
Ultrasonic Velocity ◽  
Base Fluid ◽  
Sol Gel ◽  
Interaction Force ◽  
Thermal Conductivity Enhancement ◽  
Conductivity Enhancement

In present investigation, TiO2 nanostructures were synthesized via simple sol-gel technique and characterized with XRD, SEM-EDX, HRTEM and UV-visible spectroscopy techniques. The temperature and concentration dependence of thermal conductivity enhancement and ultrasonic velocity have been explored in ethylene glycol (EG)-based TiO2 nanofluids. The obtained results showed 24% enhancement in thermal conductivity at higher temperature (80°C) of base fluid ethylene glycol by adding 1.0 wt.% of TiO2 nanoparticles. The behaviour of thermal conductivity enhancement and ultrasonic velocity with temperature in prepared nanofluids has been explained with help of existing phenomena. The increase the ultrasonic velocity in ethylene glycol with TiO2 nanoparticles shows that strong cohesive interaction force rises among the nanoparticles and base fluid. These results divulge that TiO2 nanoparticles can be considered for the applications of next-generation competent heat transfer in nanofluids.

Thermal conductivity enhancement of nano-silver particles dispersed ethylene glycol based nanofluids

2018 ◽  
Vol 5 (3) ◽  
pp. 035020 ◽  
Author(s):  
Touria Khamliche ◽  
Saleh Khamlich ◽  
Terry B Doyle ◽  
Daniel Makinde ◽  
Malik Maaza
Keyword(s):  
Thermal Conductivity ◽  
Ethylene Glycol ◽  
Thermal Conductivity Enhancement ◽  
Silver Particles ◽  
Nano Silver ◽  
Conductivity Enhancement
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