### . Cooling Options for a 10ft Container: - **Forced Air Cooling Unit**: - **Capacity**: 250 kW - **Cost**: €32,000 plus transport - **Details**: Forced air cooling is relatively straightforward but may be less efficient for high-density operations compared to immersion or hydro cooling. It uses air to dissipate heat, making it suitable for simpler setups with moderate cooling requirements. - **Immersion Cooling Unit**: - **Capacity**: 140 kW - **Cost**: €75,000 plus transport - **Details**: Immersion cooling involves submerging the equipment in a non-conductive liquid, offering more effective cooling, particularly for high-performance equipment. This method generally has a higher initial cost but provides better temperature stability and efficiency. ### 2. Hydro Cooling Challenges: - **Container Compatibility**: - 10ft containers are generally not standard for hydro cooling. A hydro cooling system in such a compact container would require a custom solution. - **Standard Capacity**: Hydro cooling typically comes in larger formats, with standard solutions in the range of **1-1.1 MW**, costing around **€130,000 plus transport**. - **Site Recommendations**: - If there are **existing premises** at some of your locations, consider deploying standalone hydro racks with **120-180 kW** capacity per rack, coupled with CDU (Coolant Distribution Units) and **dry coolers** installed externally. Dry coolers like the **120 kW dry cooler** are efficient for regulating immersion or hydro-cooled systems [[2](https://dcx.eu/liquidcooling-optimized-drycoolers/120-kw-dry-cooler/)]. - **Complexity of Hydro Systems**: - Hydro cooling requires significant **infrastructure and maintenance** compared to air or immersion cooling. This includes: - **Water Treatment**: Regular use of technologies like **reverse osmosis** for water purification to ensure system efficiency. - **Frequent Water Replacement**: Necessary for maintaining cooling efficiency, making hydro cooling less suitable for smaller, sub-1 MW operations due to the higher operational demands.