Google’s latest patent titled Water-Based Data Center describes various implementations for deriving power from water while at the same time using water as a method for cooling. One method proposed is a ship-based data center platform capable of being deployed quickly to offer greater flexibility than traditional land based data centers. These Water-Based Data Centers would be powered by natural energy derived from wave motion via tide-powered generators and cooled by “sea-water†cooling units.
The floating data centers would be located 3 to 7 miles from shore, in 50 to 70 meters of water. If perfected, this approach could be used to build 40 megawatt data centers that don’t require real estate or property taxes.
The supercomputers housed in the data centres, which can be the size of football pitches, use massive amounts of electricity to ensure they do not overheat. As a result the internet is not very green.
Data centres consumed 1 per cent of the world’s electricity in 2005. By 2020 the carbon footprint of the computers that run the internet will be larger than that of air travel, a recent study by a consultancy firm.
In an attempt to address the problem, Microsoft has investigated building a data centre in the cold climes of Siberia, while in Japan the technology firm Sun Microsystems plans to send its computers down an abandoned coal mine, using water from the ground as a coolant. Sun said it could save $9 million (£5 million) of electricity costs a year and use half the power the data centre would have required if it was at ground level.
