A recent study introduces a novel approach to hydrogen pre-cooling systems by proposing a tandem vortex tube system with a throttle-type vortex tube to enhance efficiency and stability. The system aims to balance inflation pressure, prevent backflow, and improve overall system performance. By optimizing inter-tube pressures for each refueling stage, the system achieves energy savings ranging from 0.4% to 7.1% and an increase in COP by 1.18% to 6.7%. Efficient hydrogen pre-cooling is crucial for the safety of hydrogen refueling, especially for hydrogen fuel cell vehicles, where rapid refueling can lead to temperature issues in storage tanks. The study emphasizes the significance of cost-effective and energy-efficient pre-cooling systems in hydrogen refueling stations, which account for a substantial portion of the total investment. Various methodologies, including machine learning models and innovative machinery like expanders and ejectors, are being explored to optimize pre-cooling systems and reduce operational costs. Researchers are continuously working to develop advanced strategies that ensure the stability, efficiency, and safety of hydrogen pre-cooling processes for the widespread adoption of hydrogen fuel cell technology.