Dry Cooler Optimized for Immersion Cooling Systems for Servers & ASIC Miners

Immersion cooling is widely adopted for high‑density AI servers, GPU racks and ASIC mining hardware. Dry coolers serve as the outdoor heat‑rejection unit for single‑phase immersion tank setups, removing waste heat from the secondary glycol‑water loop connected to CDU or tank‑mounted heat exchangers.

In a typical immersion cooling workflow, IT hardware sits submerged inside dielectric fluid within immersion tanks. Heat transfers from hot hardware to dielectric liquid, then passes through a liquid‑to‑liquid heat exchanger into a closed glycol‑water secondary circuit. The hot glycol flows to the outdoor dry cooler; EC variable‑speed fans blow ambient air across fin‑tube coils to dissipate heat to atmosphere. Cooled glycol circulates back to the immersion tank to complete the cooling loop.

Key advantages of dry coolers for immersion cooling projects:

• Closed‑loop dry operation, nearly zero water consumption; no legionella risk compared with cooling towers

• Full free‑cooling capability, greatly cuts energy consumption and helps lower overall PUE

• Modular capacity design, flexible for small container‑style immersion sites up to large‑scale data‑center farms

• EC variable‑speed fan configuration, adjusts airflow according to real‑time heat load for energy saving

• Optional adiabatic spray add‑on to boost cooling capacity under high‑ambient summer temperatures

• Anti‑corrosion coil coating options available for coastal or dusty outdoor installation environments

• Compatible with single‑phase immersion tanks, rack‑style immersion enclosures and containerized mining deployments

Dry coolers are the preferred heat rejection solution for immersion‑based data centers, AI computing facilities and crypto‑mining farms, especially for water‑limited locations where cooling towers are not practical.

CST Heat Exchanger provides custom dry coolers tailored for immersion cooling. Available capacities range from small‑size 40kW units up to multi‑megawatt large modules, supporting horizontal, V‑type layout, BMS communication interface and various anti‑corrosion treatments.