Experimental Investigation of Enhancement of Heat Transfer Rate in an IC engine Radiator Using Al₂O₃ based Nano-Fluid.

Abstract

Heat exchangers play an important part in the field of energy conservation, conversion and recovery. Numerous studies have focused on direct transfer type heat exchanger, where heat transfer between fluids occurs through a separating wall or into and out of a wall in a transient manner. There are two important phenomena happening in a heat exchanger: fluid flow in channels and heat transfer between fluids and channel walls. Thus, improvements to heat exchangers can be achieved by improving the processes occurring during those phenomena. Nano fluids, on the other hand, display much superior heat transfer characteristics compared to traditional heat transfer fluids. Nano fluids refer to engineered fluids that contain suspended nanoparticles with average size below 100 mm in traditional heat transfer fluids such as water, oil and ethylene glycol. An experimental system will be designed and constructed to investigate heat transfer behavior of Aluminum oxide (Al2O3) of Nano fluid a car-radiator heat exchanger. Heat transfer characteristics will be measured under the turbulent flow condition. The experiments is planned to be conducted for wide ranges of Pellet numbers, and volume concentrations of suspended nanoparticles. The outcome expectation is to measure the significance of Pellet number on the heat transfer characteristics. The optimum volume concentrations in which the heat transfer characteristics become the maximum enhancement is also addressed. Finally, the structure of aluminum oxide (Al₂O₃) Nano fluid is compared. The Water tank holds 35 liters of water. By heating the water to 44 degrees and entering the engine and whose output was through radiator cooling, by this system able to reduce the maximum temperature by 4.89%. Then put the same amount of water in the water tank and this time by mixing coolant with water and heating it to 44 degrees and entering the engine and the output of which was through radiator cooling, At last able to reduce the maximum temperature by 7.10%. Finally, again the same amount of water in the water tank and this time mixed aluminum oxide (Al2O3) with water and heated it to 45 degrees to enter the engine and whose output was through radiator cooling, in the way able to reduce the maximum temperature by 10.95%.