The immersion fluid has a higher heat absorption capacity than the surrounding air. Giving you the potential of higher hash rate due to overclocking (which is unattainable with air cooling) and faster return on investment.
The 40kW Dry Cooler comes with a single Hotbox Liu as a complete 6-pack turn-key immersion system. The package includes: one aluminum enclosure, 2 heat exchangers, 1-phase 6-way C20 4kW PDU, 6 stand-offs, power cables, switches, 40kW Dry Cooler with pumps, valves, expansion tank, regulator valve, fittings. Allows stable overclocking of Antminer S19 from stock 3250W to 4000W.