Effect Of Nanoparticle Size And Concentration On The Thermophysical Properties Of Al2o3 Nanolubricant For Use In Vapour Compression Refrigeration System

Abstract

Thermal systems such as refrigeration and airconditioning are commonly used in the
tropic region for preservation and cooling. The thermophysical and hydraulic properties of the heat
transfer fluid affect the rate at which heat is removed from a system, overall system efficiency, and
energy consumption. The use of nanoparticles in heat transfer fluid enhances the thermophysical
property of the fluid. The effect of nanoparticle concentration and size on the thermophysical
properties of the lubricant used in vapour compression refrigeration system (VCRS) was studied in
this work. The addition of nanoparticles to the lubricant increased the viscosity of the lubricant and
the increase is dependent on the nanoparticle concentration, size, structure, and temperature. The
density, acidity, and conductivity of the lubricant also increased with the addition of nanoparticles.