Exergy-absorbing process

Fig. 11.8. Schematic exergy vector diagrams for exergy transfer between an exergy-absorbing process and an exergy-releasing process (a) the combined process is not feasible, (b) the combined process is feasible.

In the case shown in Fig. 11.8(a) where the composite vector, that is the vector sum of the two component vectors of the exergy-absorbing and exergy-releasing processes 1 and 2, points in the direction of exergy increase (AE > 0), the resultant process of the coupled and coupling processes is thermodynamically impossible to occur in the system under consideration. On the other hand, in the case shown in Fig. 11.8(b) where the composite vector points in the... 

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