An experimental study on the thermal conductivity of new antifreeze containing copper oxide and graphene oxide nano-additives

2019 ◽  
Vol 345 ◽  
pp. 658-667 ◽  
Author(s):  
Sara Rostami ◽  
Afshin Ahmadi Nadooshan ◽  
Afrasiab Raisi
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Graphene Oxide ◽  
Copper Oxide ◽  
Nano Additives

scholarly journals Experimental Study of Thermal Properties and Dynamic Viscosity of Graphene Oxide/Oil Nano-Lubricant

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2886
Author(s):  
Ramin Ranjbarzadeh ◽  
Raoudha Chaabane
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Graphene Oxide ◽  
Cloud Point ◽  
Dynamic Viscosity ◽  
Freezing Point ◽  
Flash Point ◽  
Engine Oil ◽  
Base Oil ◽  
Nano Lubricant

This experimental study was carried out based on the nanotechnology approach to enhance the efficacy of engine oil. Atomic and surface structures of graphene oxide (GO) nanoparticles were investigated by using a field emission scanning electron microscope and X-ray diffraction. The nano lubricant was produced by using a two-step method. The stability of nano lubricant was analyzed through dynamic light scattering. Various properties such as thermal conductivity, dynamic viscosity, flash point, cloud point and freezing point were investigated and the results were compared with the base oil (Oil- SAE-50). The results show that the thermal conductivity of nano lubricant was improved compared to the base fluid. This increase was correlated with progressing temperature. The dynamic viscosity was increased by variations in the volume fraction and reached its highest value of 36% compared to the base oil. The cloud point and freezing point are critical factors for oils, especially in cold seasons, so the efficacy of nano lubricant was improved maximally by 13.3% and 12.9%, respectively, compared to the base oil. The flash point was enhanced by 8%, which remarkably enhances the usability of the oil. It is ultimately assumed that this nano lubricant to be applied as an efficient alternative in industrial systems.

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