Dry coolers
0About dry coolers
Dry coolers are air‑cooled heat exchangers that remove heat from a liquid (usually water or a water‑glycol mix) using ambient air and fans, without consuming water like cooling towers.
In mining and data centers, they work as outdoor “radiators” that take heat from immersion or hydro‑cooling circuits and release it into the atmosphere, closing the cooling loop for ASIC miners and other high‑density equipment.
How a dry cooler works
Hot coolant from the mining farm flows through finned tubes inside the dry cooler, while axial fans draw or push outside air across the fins and carry the heat away.
The liquid cools down as it passes through the heat exchanger and then returns to the facility’s heat exchangers or immersion tanks, providing a fully closed, air‑cooled system with low maintenance and no process‑water consumption.
Dry coolers in immersion and hydro‑cooling
In immersion setups, ASIC miners are submerged in dielectric fluid, which transfers heat to a secondary water or glycol loop; this loop is then cooled by an outdoor dry cooler sized to match the total thermal load.
For hydro‑cooled miners, heated coolant from racks is sent to plate or shell‑and‑tube heat exchangers connected to dry coolers, allowing efficient and scalable heat rejection with relatively simple infrastructure.
Advantages of dry coolers for mining
Dry coolers have low operating costs, long service life and minimal maintenance compared with chillers and cooling towers, because they have no compressors and do not rely on evaporation.
- They enable “free cooling” at low outdoor temperatures, when fans alone can keep coolant within the desired range and significantly reduce energy use.
- Modular designs make it easy to scale from small units of a few dozen kilowatts to large V‑shaped or containerized systems rated for hundreds of kilowatts or more.
What to consider when choosing a dry cooler
When selecting a dry cooler for a mining farm, it is important to match its thermal capacity, coolant flow and temperature range to the total heat load of your ASICs and the local climate.
You should also take into account fan configuration and noise level, materials of tubes and fins, glycol concentration, available installation area and whether you need a modular, container‑ready design for future expansion.
Asic24 can help design and supply drycooler‑based solutions for immersion and hydro‑cooled mining farms, selecting suitable dry coolers, pumps and heat exchangers to ensure reliable year‑round cooling and high energy efficiency.
