If You Have 100 S21 Pro Model Bitcoin Mining Machines, What Capacity Dry Cooler Do You Need?

If You Have 100 S21 Pro Model Bitcoin Mining Machines, What Capacity Dry Cooler Do You Need?

To determine the appropriate dry cooler capacity for 100 S21 Pro Bitcoin mining machines, we need to consider their heat dissipation (heat output) and the cooling requirements.

Step 1: Check S21 Pro Specifications

Power Consumption: ~3,500W (3.5 kW) per unit

Heat Output: Typically, nearly 100% of power consumption converts to heat, so ~3.5 kW per machine.

Step 2: Total Heat Load Calculation

For 100 S21 Pro miners:

Total Heat Output = 100 × 3.5 kW = 350 kW

(This is the amount of heat that needs to be dissipated.)

Step 3: Dry Cooler Sizing

A dry cooler removes heat by exchanging it with ambient air (no water evaporation). The required capacity depends on:

Heat load (350 kW)

Ambient temperature (higher temps require larger cooling capacity)

Desired exhaust temperature (lower exhaust temps require more cooling)

General Rule of Thumb:

For Bitcoin mining, a dry cooler should have at least the same cooling capacity as the total heat output (350 kW in this case).

If operating in hot climates (≥30°C), consider 10-20% extra capacity (~385-420 kW).

Step 4: Example Dry Cooler Selection

A 400 kW dry cooler would be a safe choice for 100 S21 Pro miners in moderate climates.

If in a very hot environment (e.g., 40°C), consider 450 kW or liquid cooling alternatives.

Additional Considerations:

Airflow Requirements: Ensure the dry cooler can handle the CFM (Cubic Feet per Minute) needed (~20,000–30,000 CFM for this setup).

Redundancy: If uptime is critical, consider two 200 kW dry coolers for backup.

Liquid Cooling Alternative: More efficient in high-heat environments.

Final Recommendation:

For 100 S21 Pro miners (350 kW heat output), a 400 kW dry cooler is a good baseline. Adjust based on local climate and redundancy needs.