In this experimental study, the results of utilizing a nano-lubricant in place compressor work fluid refrigeration system were examined. R134a refrigerant was utilized system. Polyol ester (POE) used as base and prepared from alumina oxide (Al2O3) nanoparticles utilized. The experiments carried out separately with nano-lubricants created by mixing Al2O3 ratios 0.5% 1.0% into POE oil. Additional...

With the EU aiming for net-zero greenhouse gas emissions by 2050, conventional production cycles must be transformed into cradle-to-cradle approaches. Spent coffee grounds are often dumped in landfills, with their potential as high-quality feedstock biofuel or bio-lubricant production. oil (SCGO) was investigated its physicochemical properties while having more free acid groups compared to refe...

IDENTIFICATION OF A MARKET Developing a new market for an established international crop like canola (Brassica napus L., Brassica rapa L., Brassicaceae) requires significant care and study. Canola has been identified by several authors as a highly desirable food oil. Canola oils are relatively rich in monounsaturated fatty acids and with small percentages of both saturated and polyunsaturated f...

Understanding the physical behavior of polymer-based lubricants on the nanoscale is of critical importance to a myriad of engineering applications and devices. We have used molecular dynamics simulations to quantitatively evaluate the physical mechanisms underlying perfluoropolyether lubricant spreading on a solid substrate. We quantify the effect of molecular mass, molecule length, and lubrica...

This paper explains the effect of various lubricant and engine temperatures on the intake mass air flow, engine noise and lubricant pressure behaviour of a motor-driven spark ignition engine. The lubricant pressure, engine noise and mass air flow changes were recorded under a steady state operating condition with an increased engine speed in which both the volume and temperature of the lubrican...

The current analysis was carried out to determine the chemical components in leaves of R. minima (L.) DC. GC-MS methanolic extract Minima indicated presence 19 compounds. prevailing compounds were 1Pentadecene (14.31), alpha. Bisabolol (10.39%), 1Heptadecene (9.78%), Cyclohexene,4 (1,5dimethyl1,4hexadienyl (7.06%), 3Hexadecene (Z) (8.10%), Caryophyllene (6.58%), Neophytadiene (5.16%), Humulene ...

Vapor phase lubrication is considered one of the most likely means of lubricating MEMS devices with replenishable solid films. Since gas phase diffusion is the primary means of vapor lubricant transport into the long, narrow channels of MEMS devices, it is necessary to determine that this is sufficient to replenish lubricant films worn at high rates. The diffusion of vapor phase lubricant into ...

Synthetic transducers transport externally added metal ion cofactors across the lipid bilayer membrane of vesicles to trigger catalysis ester hydrolysis in inner compartment. Signal transduction activity is modulated by hydrazone formation.

For good transformer condition assessment it is necessary to determine the of insulating materials, both liquid and solid. Transformer reliable for as long its insulation system resists deterioration. Therefore, thermal oxidation stability are important characteristics oil. It a measure oil resistance decomposition by influence oxygen temperature. Oils with retain their regardless stress. Becau...