Vortex, or some other cooling?

I might have a line on an affordable ($800) used Cornwell compressor that can deliver 15 cfm- sufficient, me thinks, to drive a vortex cooler. For what? Plastics. Is there any better alternative? I worry about the impacts something like a water deluge system might have on the machine, with constant exposure to moisture- or if such would even be better than a vortex.