Operating characteristics of further flow configurations. Diagrams

5 Operating characteristics of further flow configurations. Diagrams 

In addition to the cases of countercurrent, cocurrent and crossflow, further flow configurations are possible. These are also applied in industry and have been investigated by many different authors, cf. the compilation of W. Roetzel and B. Spang [1.16]. The operating characteristics F eilNilCi) = 0 are often complex mathematical expressions, so it seems reasonable to represent the results graphically. 

In the triangle below the diagonal, the operating characteristic is represented in the form of F(e2, N2,C2) = 0. The lines of equal transfer capability = N2 meet at the diagonal C = C2 = 1 with a kink. This is due to (1.145). Only the line = N2 — oo does not have a kink at this point. In symmetrical flow 

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