With trends like high performance computing and high quality client virtualisation the server density reach new heights in data centres worldwide. The increasing density often leads to power and cooling challenges for traditional air-cooled facilities.
Fujitsu’s new Cool-Central Liquid Cooling Technology has been developed to overcome cooling as well as power challenges, and to significantly reduce investment and operating costs in the data centre.
Cool-Central Liquid Cooling is a “free cooling” solution that captures between 60% and 80% of server heat, reducing data centre cooling cost by over 50% and allowing 2,5-times to 5-times increases in data centre server density.
The solution removes heat from CPUs, GPUs, and memory modules within servers using water as hot as 40 °C (105°F), eliminating the need for chilling to cool these components.
Chilling is the largest portion of data centre cooling opex and capex costs. With Fujitsu’s liquid cooling solution less air needs to be cooled and moved by computer room air handlers (CRAH) or computer room air conditioning (CRAC) units.
In addition, liquid cooled servers need less airflow resulting in more energy efficient servers.
Cool-Central Liquid Cooling is capable of returning water from the data center at temperatures high enough to enable waste heat recycling. Data centers choosing this option recover a portion of the energy running their servers further increasing energy cost savings, reducing carbon footprint and resulting in cooling energy reuse efficiencies (ERE) below 1.0.