Why waste the heat?
How about placing em in the basement of office blocks or apartments in towns where the weather is cold, damp and crap all year round (just about everywhere in the UK). Hook up some kind of heat exchange with the central heating system and "bobs your uncle". Nice toasty warm offices and flats, reduced heating costs and zero air con bills.
Not sure what we do on the two or three days a year when it actually does get warm here in blighty but Im sure some expert in these matters will come up with a workable answer. Oh, hang on a minute, I know... we could pipe the warm water to the local swimming pool, that'll work. Wont it?