I am a big fan of Data Center Knowledge blog. It keeps us updated about the new happenings or innovations in the data center world – on how people are making data centers green – by reducing energy consumption, improving power usage effectiveness or consuming green energy.
One such innovation is by IBM folks to create a closed loop cooling/heating system. Cooling happens at a chip level. They send normal water to cool the chips (apparently, the chip needs to be below 85 degrees centigrade to operate without getting insane). The water becomes a little bit hot after cooling the chips. The heated water is now sent to other parts of the building for other heating purposes – like heating the building (in cold countries, especially). The water becomes cool after heating and becomes ready to cool the chips again. All that is necessary is a pumping system that keeps the flow of water at a steady speed. Good one!!