My thought is to eliminate the pad and use the water mist on the rad to do evap cooling directly. The air blowing on the misted rad will cool better than blowing through a pad. I think. I haven't tried it yet, but the misting used for crowd cooling works pretty good.
With or without a pad, it will reduce the air temp thru the rad below ambient, which is the limit in pure air/rad cooling.
Let'em laugh. Won't know til it's tried.
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