Application of Multi-Length Scale Fractal in Heat Transfer Augmentation of Air-Conditioning System

Turbulence generators exist in many forms, and the designs are bounded only by our imagination. This thesis investigates the application of fractal-inspired passive grid turbulence generator in enhancing thermal dissipation performance of fins incorporated with 90° bend. Fractal geometry is the self-replication of a basic geometry on a progressive scaling, enabling effective flow control and generating airflow perturbation towards the fins. The findings elucidate the advantages of employing a fractal grid over the classical mono-thickness grid. The inclusion of fractal can facilitate new energy-efficient designs in various industries, in particular the air-conditioning industry, which employs heat exchangers with 90° bend(s).