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Recent Trends in Fluid Mechanics Review Article

Improved Cooling Effectiveness in Radiators and Heat Exchangers with Nanofluid-Based Technology

  1. Pinki Kumari Department of Electronics & Communication Engineering, Millennium Institute of Technology and Science, Bhopal
  2. Mahendra Prajapati Department of Electronics & Communication Engineering, Millennium Institute of Technology and Science, Bhopal, Madhya Pradesh

Abstract

This study discusses how the process of heat transfer in radiators and heat exchangers can be improved using nanofluids and analysis of computational fluid dynamics. These nanofluids comprise Al₂O₃ and ZnO dispersed in water-based ethylene glycol solutions, and graphene oxide dispersed in water-based solutions, and performance evaluation was done for the range of flow rates 180–420 l/h. And a 3D CAD model was created using the ANSYS Workbench. It was developed using k-epsilon RNG turbulence models and a steady state pressure-based formulation. Several critical parameters involved in temperature distribution, heat transfer rates, the coefficients of heat transfer, as well as Nusselt numbers, have been observed. Nanofluids showed improved thermal performance from that of standard coolants by various folds. The nano fluids of ZnO have an increase in the rate of heat transfer by 1.57-fold, and graphene oxide is stable with good thermal conductivity. Such results present nanofluids as potential candidates for improving thermal management in automotive and industrial applications. Integration of advanced materials like nanofluids with CFD modeling presents a promising way of optimizing heat exchange systems, improving energy efficiency, and solving contemporary engineering challenges.

Keywords

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