Fair to middlin' explanation. Please do a multisection cutaway to illustrate the heat delivery from the plenum to the hot air triangles to the full width of the grain column and the exhaust flow. Also show air and corn flow for screen dryers. What is the range of recycled heat in BTU/bu from the dried grain outlet air preheater? Since there is really nothing special about preheating combustion air do other manufacturers also have a grain cooling / air preheater sections?
