Numerical study on thermal performance analysis of radiator: effect of the number of pipes

Abstract

The car Radiator is one the most important of its parts which plays a very important role in the heat transfer of the engine. Our study is based on the number of pipes or tubes in a car radiator. By varying the number of tubes while designing the car radiator, a two-dimensional laminar flow analysis of the car radiator and heat transfer with one of the nanofluid: Al2O3 and H2O, mixed with water that circulates inside the tubes of a car radiator have been studied to evaluate their advantage over the base of the number of tubes. The effects of different pipes number configurations with an identical geometric cylinder on the heat transfer rate and pressure drop were investigated. Convective heat transfer coefficient in the developing and developed regions along the tubes with the higher number of tubes showed marked improvement over the less number. The local and average friction factors, as well as the heat transfer ratio, rise as the number of pipes and volumetric concentration of Nano fluids increase. By varying the number of tubes, quantitative findings of the rise in the heat transfer coefficient and friction factor with increasing volumetric concentrations of nanofluids are reported. For evaluating overall performance, the degree of performance statistics was provided. All of the designs with 15, 25, and 30 cylinders were studied. Despite the fact that the 30 pipes design had the best of the overall in terms of performance, the results revealed that among these geometries, the radiator with the highest thirty (30) tubes had the best thermal performance, while the 15 pipes configuration had the lowest pressure loss. After that, the impact of varying tube counts on radiator performance was investigated. Finally, the three radiators were compared, and the radiator with the most tubes, which in our case was thirty, was determined to have the best layout.