PERFORMANCE ENHANCEMENT AND OPTIMIZATION OF THE SIZE OF RADIATOR IN AUTOMOBILES USING NANOADDITIVES

摘要

Nanofluids are the potential heat transfer fluids with enhanced thermo physical properties. Thermal conductivity is considered as an important factor for rapid heating and cooling application. Base heat transfer fluid normally has low thermal conductivity; addition of nanoparticles to the base fluid can increase the thermal conductivity of the base heat transfer fluid. The nanofluids have the ability to increase the cooling rates of the engine cooling system and also leads to design the more compact cooling parts especially radiator. In this project we carried out the experimental investigation and comparison on the performance of the radiator with three different coolants; conventional coolant, CuO nanofluid coolant, Ti02 nanofluid coolant. Nanofluid coolant has been tested as potential substitute for the conventional coolant. The nanofluid coolant shows the better and higher heat transfer rate and overall heat transfer coefficient compared to the conventional coolant. In the comparative study of CuO and Ti02 nanofluid coolant CuO has the better heat transfer rate than Ti02. The overall heat transfer rate of CuO nanofluid coolant is higher than that of conventional coolant by 16.4% while Ti02 nanofluid coolant shows increase of 13.7%.