This project investigated airflow, heat transfer, and cooling performance in a mobile, modular refrigerated container. Through advanced 3D CFD simulations, several configurations of refrigeration unit arrangements were assessed to determine how to achieve uniform air distribution and effective cooling under realistic operating conditions. The models incorporated key details such as lighting loads, internal obstacles, and heat losses through walls and ceilings, providing an accurate representation of real-world performance. The analysis revealed that warm pockets tend to form near the ceiling due to limited vertical air circulation and recirculation effects. One configuration achieved better overall cooling efficiency even with fewer refrigeration units, showing the importance of system layout. The study demonstrated that the positioning and arrangement of units strongly influence temperature uniformity. It also recommended strategies such as optimised fan configurations, adjustable air louvers, and transient testing, as well as exploring renewable energy integration to improve long-term efficiency and sustainability.