ENTERPRISE TECHNOLOGY
Servers are in vertical racks and the dielectric coolant circulates inside and around the immersed equipment . This eliminates the need for any additional cooling systems around the CPU itself . The system is efficient because the dielectric is an efficient conductor of heat but not electricity .
The dielectric fluid in the immersive pods is electrically inert and non-conducting . In other words , it is not electrically conductive and does not carry currents through its depth . Hence there is no hazard to personnel or the equipment itself , from any possible leakage of charge .
In addition to the power savings achieved by using the dielectric fluid , the IT infrastructure that is immersed inside the dielectric do not need to use fans or any other additional cooling systems . This reduces the energy consumption of the IT infrastructure and improves the PUE ratio .
At its Experience Centre in Dubai , ALEC Data Center Solutions uses the Submer SmartCoolant liquid . This is a dielectric , synthetic , proprietary fluid , that is certified as 100 % non-hazardous and biodegradable according to OECD 301 . The properties of the SmartCoolant fluid allow for a significantly higher heat transfer performance as compared to air .
“ The immersion cooling solution we deploy also eliminates the use of refrigerant gas and its associated carbon emissions ,” adds Viedge .
Air versus liquid cooling
Datacentres that are using immersive liquid cooling are more energy efficient than air cooled datacentres . The PUE of a single phase , immersive liquid cooling datacentre can be as low as 1.03 . This is in comparison
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to upwards of 1.35 for air cooled datacentres , that can range as high as 1.90 .
Air is a substantially less effective conductor of heat than liquid . This makes aircooled datacentres intrinsically less efficient but creates ripple effects that have a serious impact on operating expenses .
Fans inbuilt into servers and CPUs account for 15 to 20 % of power consumption by IT infrastructure . By using liquid immersive cooling , this consumption is eliminated , since fans are not required or become idle when IT infrastructure is immersed . Cooling equipment for the overall datacentre can also be scaled down since there is no heat emitted outside the immersive station .
Air cooled datacentres require relatively larger area footprint , have a high wastage of water and have noisy operations . Immersive liquid cooled datacentres require 85 % less
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