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A 240kW immersion cooling dry cooler is a dedicated, water-free heat rejection unit for Antminer S19 series miners (air/liquid-cooled models). It pairs with dielectric oil immersion tanks to remove 240kW of heat at 35°C ambient, supporting 48 units of S19 (≈5kW per miner) in high-density, 24/7 mining farms.
How It Works with S19 Immersion
1. Immersion Tank (Hot Side)
Antminer S19 fully submerged in dielectric oil (non‑conductive, 35–50°C).
Oil absorbs 5kW per miner; 48 units = 240kW total heat load.
Hot oil (50–55°C) circulates to the dry cooler via a closed loop.
2. Dry Cooler (Heat Rejection)
V‑shaped coil with 450–500㎡ heat transfer area.
EC fans force ambient air over fins; oil cools to 35–40°C and returns to tank.
No water evaporation; 100% dry operation (critical for arid regions).
3. Control & Efficiency
VFD fans: Adjust speed (30–100%) based on oil temp; save 30–40% fan power.
Free cooling: In winter (≤15°C), fans run at low speed; no chiller needed.
Redundancy: Modular design; one fan down → others ramp up.
Key Advantages for S19 Mining
High Density & Overclocking
48 S19 in 2×2.5m footprint (vs. 100+㎡ for air cooling).
Stable 50–55°C chip temp → higher hashrate & lower error rates.
Zero Water & Low OPEX
No cooling tower, no evaporation, no water bills; 35% lower energy vs. air cooling.
Fan power: ≤3.6kW (240kW heat load) → COP ≈ 67.
24/7 Reliability
Harsh environment rated: −25°C to +55°C, dust/humidity resistant.
No scaling, no Legionella risk; minimal maintenance (annual coil cleaning).
Scalable & Containerized
240kW per unit; 2×240kW = 480kW for 96 S19.
Fits standard 20ft/40ft containers for easy deployment/relocation.
Typical System Layout (240kW for 48×S19)
Immersion Tanks: 2–4 racks (48 S19 total), dielectric oil (1000–1500L).
Dry Cooler: 1×240kW V‑shape unit (outdoor/roof).
Pumps: 2×oil circulation pumps (1 duty + 1 standby).
Controls: PLC + HMI; temp monitoring, fan VFD, alarm notifications.
Piping: Insulated stainless steel; closed loop (no contamination).
