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used CAD (cardboard aided design)
Achim,Sent you photos to an old email address I had for you. Jeff
Long time lurker here!Here are some photos of the cooling towers used by IHC. The one on the right is on a 30-60 tractor and is the same engine as the 50HP stationary you are planning to build.I’m in the debug stage on my rendition of the Doug Kelly design and piston rings and valve seats are not sealing so a rebuild of those items is planned. I chose the stationary version of the cooling system and used CAD (cardboard aided design) to get the size roughly comparable with the engine.
Achim,The water is directed against the screens to either side of the pipes to slow the fall and create a larger wetted surface for evaporation. To create an effective cooler on a much smaller scale I suspect you would have to use a slightly larger scale screen size due to the surface tension of water. Maybe also add a wetting agent to the water. Jeff