Using a Thermosyphon Hybrid Cooling System to Optimize Data Center Water Efficienc

The National Renewable Energy Laboratory (NREL) data center is home to warm-water liquid-cooled high-performance computing (HPC) systems that—while ultra energy efficient—generate a tremendou amount of heat. Evaporative cooling is an effective technique for managing that heat, as it is more efficient andless expensive than compressor- based cooling, but it requires a large, steady supply of water—more than 2 million gallons per year for NREL’s HPC data center.