An RDHx (Rear Door Heat Exchanger) connected to a dry cooler forms a closed-loop, liquid-based heat rejection system that removes server heat directly at the rack level and dissipates it outdoors without mechanical refrigeration. The process is straightforward, efficient, and highly scalable.

An RDHx (Rear Door Heat Exchanger) is used in IT rooms and data centers to remove heat directly at the server rack level, before hot air mixes into the room. This approach dramatically improves cooling efficiency, supports high rack power densities, and reduces dependence on traditional room-level a