bja is right. It will not cool fast enough. It will cool, but from my test I would have to chill 90 gals of water below my target temp then pump it through the plate. Kinda defeats the purpose of making things easy. Back to the drawing board.
tampa911 and tally350z have got the only other solutions for hot states I have found or maybe I better look back at the MythBusters chilling a beer as fast as you can.