Experimental Studies and Comparison of Various Mechanical and Thermal Properties of Lubricants by Adding Nano Additives of Al2O3 and SiO2

2nd International Conference on Advancements in Aeromechanical Materials for Manufacturing

航空航天工程;材料科学;机械制造

Koppula, Suresh Babu^1,2 ; Sudheer, Nvvs^3

Dept. of Mechanical Engineering, Acharya Nagarjuna University, Guntur, AP, India^1

St. Martin's Engineering College, Dhulapally

Telangana, India^2

Dept. of Mechanical Engineering, RVRandJC College of Engineering, Guntur, India^3

关键词: Electron microscope scanning;    Heat transfer applications;    Laminar flow conditions;    Low thermal conductivity;    Manufacturing industries;    Mechanical and thermal properties;    Nanofluids;    Thermal and mechanical properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/455/1/012056/pdf
DOI  :  10.1088/1757-899X/455/1/012056

来源: IOP

【 摘 要 】

In industrial and domestic applications conventional fluids are used such as lubricating oils, air, water and other coolants for cooling and heating purposes in case of automobiles engines and other parts in automobiles, refrigeration, cotton industries, manufacturing industries and other applications. It observed that by using some of such fluids there is hindrance and curb in heat transfer capacity due to low thermal conductivity possessed by fluids. Recent technology projected on nano fluids shows, nano materials occupies an important place in changing the properties of elements in basic structure. Various advanced researches revealed that heat transfer rate dependent on the conductivity of particles of material as well as particle size, diameter and volume concentration of nano material. The advanced nano fluids are using to increase thermal conductivity in heat transfer applications by using equipment such as radiators, heat exchangers, boilers, economizers etc. This experimental work studies and investigates thermal conductivity for nano fluids by adding additives of Al2O3 and SiO2 about 60nm size. The thermal and mechanical properties evaluated based on experimental data by using a counter flow pipe in pipe heat exchanger at laminar flow conditions and by using a forced convection mode operation. The nano fluid consists of different concentrations of nano materials as 0.2%, 0.4%, 0.6%, 0.8%, 1.0% and 1.2% with SAE0W-20 engine oil as base fluid. Images taken to measure size of nano particles and also other characteristics by using Electron microscope scanning (SEM).