I am running chilled water through a heater core on its way back to the res to cool the air coming into the case. it also keeps the condensation off the waterblock with no insulating.
course it takes a substantial chiller
one one on the case is the internal air temp, the other is room temp
heres a link to the whole mess if your interested
http://www.aoaforums.com/forum/showt...threadid=17500