Air-to-Air Heat Exchanger — Both the interior and exterior of the heat exchanger facilitate airflow: flat tubes carry hot air from inside the cabinet, while the finned area allows the flow of external ambient air. This design enables heat exchange between air streams, featuring a simple structure, complete isolation between internal and external environments, easy installation, and high reliability. It is suitable for heat dissipation in electrical cabinets, telecommunications cabinets, energy storage cabinets, and other enclosed systems.