Industrial cooling guide
Rear-Door Heat Exchangers
Liquid-cooled rack doors that capture server exhaust heat.
Safety boundary: this page is conceptual. It does not provide refrigerant charging/recovery steps, chemical water-treatment recipes, pressure-system procedures, electrical work, machine settings or hazardous maintenance instructions.
What this topic covers
Liquid-cooled rack doors that capture server exhaust heat.
Core thermal ideas
Rear-door exchangers place a liquid heat exchanger directly in the rack exhaust path.
They can reduce the amount of hot air released into the room.
Water temperature, condensation risk, pressure drop and maintenance access require careful integration.
System tradeoffs
The complete thermal path includes heat source, interface, plate or sink, coolant, exchanger and final heat rejection.
What to monitor
High-density electronics increasingly push cooling closer to the heat source.
Lifecycle perspective
Good design avoids moving a bottleneck from the chip or process into the facility cooling plant.