|The BladeRoom has an advanced cooling system able to match exactly the actual cooling demands of the IT.
The low energy data centre cooling system uses standby N+1 mechanical cooling rarely, with principal cooling maximising free, filtered, ambient air with evaporative cooling. Free cooling is available for up to 100% of the time (depending on the climate) - saving significant amounts of money and carbon emissions.
The design of the BladeRoom system was based around some simple guiding principles:
1. to extract maximum heat from IT
2. to deploy mechanical cooling rarely, and
3. to use filtered ambient air and evaporative cooling to achieve 99+% free air cooling.
The BladeRoom system has been designed around the ventilation requirements to achieve maximum efficiency. Air is delivered seamlessly to where it is needed through the normal working corridors so ductwork and raised floors are not required. National, European and International patents pending cover this unique and important development.
Rather than re-circulating and cooling the hot air from the IT as with traditional data centre cooling, a BladeRoom data centre operates like a server by drawing in highly filtered fresh air, intelligently matching air supply to IT demand and exhausting hot air entirely from the data centre as required.
Evaporative and free cooling enables the IT equipment to be cooled with supply air temperatures of between 18C and 24C for more than 99% of the year without the need for mechanical cooling across a range of IT loads, still performing efficiently at 15% utilisation of racks.
The back-up mechanical cooling system is only used for emergencies and for partial cooling during extreme weather conditions and is designed to cool 100% of the IT load.
The climate emulator tested the BladeRoom system in temperatures up to 48C
The whole data centre cooling design was initially developed using detailed CFD modelling. Once satisfied and international patents filed, we built the first BladeRoom system configuration. To test its efficiency we invested in designing and building a Climate Emulator.
The Climate Emulator enabled us to produce enormous volumes of fresh air at a temperature and humidity range that can mimic any location in the world and supply it to the air intake of the BladeRoom.
The Air Optimiser cools the servers primarily using fresh air and evaporative cooling
Inside the BladeRoom we used heat emulators to match the true power and heat demands of 120 racks filled with modern servers as closely as possible.
Using 240kW of heat emulators, we were able over several weeks to prove beyond any doubt the true energy consumption of the BladeRoom system. Varying IT loads were tested through the entire climatic range from -5C to +48C at 5% to 100% RH, consistently delivering impressively low PUE readings.
Initially we tested 2kW per rack in 4 aisles of 30 racks per aisle. Then, by redistributing the heat emulators we were able to increase the heat loads in any given aisle to demonstrate high density cooling levels.
Testing with 24kW/rack
The final phase of the tests involved the entire load being condensed into 10 racks in one IT room delivering 24kW per rack. The BladeRoom system progressively redistributed the cooling load where required responding to the changing load when the heat emulators were moved between IT rooms.
The BladeRoom System has been proven to comfortably deliver in excess of 24kW per rack of IT with 100% free cooling, even with external temperatures in excess of 40°C; something that had not previously been achieved.