Google Cooled with Sea Water

Google has opened a new data center in Finland where all of the cooling isn't done by compressors and refrigerants but sea water. The building is located by the Gulf of Finland and using its natural resources. In data centers, cooling is one of the biggest expenses. The Google data center bring the sea water in by granite tunnels and into heat exchangers where the water is then absorbs the heat from the running equipment and keeps the builiding cool.