All cooling tower constructions built so far can be assigned fluidically to the cross-flow or counterflow principle. The new Matrix-Multiflow-System, which was developed in cell-construction with ducted aeration for large cooling capacities of the industry and energy economy; corresponds basically to none of the two principles, even if constructively it represents a modified cross-flow tower with cross-flow film internals. In the following the development, function, construction, defined properties and application demand of this patented cooling tower principle is described. It takes over and extends the typical advantages of the cross-flow principle and minimizes the disadvantages with regard to the counterflow principle.