Environment Forum

IBM supercomputer reuses heat to warm buildings

IBM’s latest green venture is a highly efficient supercomputer that uses water to siphon off  waste heat, and then uses the excess energy to warm up a building.

High-tech giants from Microsoft to Google are eager to cut the huge amounts of power used to run their data centers, particularly now that the recession has companies leaving no stone unturned to slash costs and global warming is driving them to think green.

Developed by IBM jointly with the Swiss Federal Institute of Technology (ETH) — a sort of Swiss version of the Massachusetts Institute of Technology — the new supercomputer’s microchips avoid cooling with energy-sucking air conditioning.

Thanks to a network of water-carrying “micro-capillaries” that take water very close to the microchips, the system is cooled at a temperature of 60 degrees Celsius, rather than a “normal coolant” that requires a temperature of about 20 degrees Celsius, or air at around 6 to 12 degrees Celsius, according to IBM researcher Dr. Thomas Brunschwiler.