There's also a data center in Helsinki, Finland that is cooled by sea water and the waste heat produced is piped via a heat pump into the district heating network. Here's a press release from 2011:
http://www.investineu.com/content/atos-builds-world%E2%80%99...
This, it feels like an awful waste to dump the heat straight into the ocean. District heating networks are a very efficient way to heat up a city, and they can be used as a place to dump excess heat. Further, we've now also got district cooling, http://basrec.net/wp-content/uploads/2014/05/District%20Cool... [PDF warning]
Maxion|7 years ago