Air-cooled mining relies on moving enormous volumes of air through a building. Immersion replaces that with fluid, and the change reaches almost every aspect of how a facility is built.
Fluid removes heat more effectively than air
Dielectric fluids conduct heat far better than air while remaining electrically non-conductive, so components can be submerged without shorting.
Heat moves into the fluid, which is circulated to a heat exchanger and cooled, usually by water on a secondary loop.
Removing the same heat with air requires substantial fan power at both the machine and building level, and that consumption counts against the facility's efficiency.
Density rises sharply
Air-cooled layouts are constrained by airflow. Rows need spacing, hot and cold aisles must be separated, and ducting occupies volume.
Immersion tanks remove those constraints, allowing considerably more computing capacity in the same footprint.
Higher density concentrates electrical load, so distribution equipment must be sized accordingly and the building's structure must carry the weight of filled tanks.
Operating conditions become steadier
Submerged components run at more uniform temperatures than air-cooled ones, which experience hot spots and fluctuate with ambient conditions.
Stable thermal conditions reduce the thermal cycling that stresses solder joints and components over time.
Machines are also isolated from dust and humidity, which matters in locations where air quality would otherwise require substantial filtration.
Maintenance procedures change entirely
Servicing means lifting a unit from fluid, allowing it to drain and working on a wet device, which takes longer than swapping an air-cooled machine.
Fans are removed before immersion, and some components are unsuitable for prolonged fluid contact, so hardware often needs preparation before deployment.
Fluid itself requires monitoring and periodic filtration, and it represents a significant up-front cost that air cooling does not carry.
Warranty terms are a further consideration, since submerging a machine can void manufacturer coverage unless the model was sold for that purpose or the operator has arranged an exception.
Siting options widen
Noise is one of the main obstacles to placing air-cooled facilities near populated areas, and the noise comes almost entirely from fans.
Immersion sites are far quieter, which changes which locations are viable and how planning discussions proceed.
Heat recovery also becomes practical, because the captured heat leaves in a liquid loop at a usable temperature rather than dispersing as warm air, opening applications such as greenhouse or district heating where a nearby user exists.
That last condition constrains the idea considerably. A heat user must be close enough that the piping is economic and must want heat on the schedule the site produces it.