Entropy generation chemical affinity

In Section 3.3, we have shown that the entropy generation rate in the case of heat transfer in a heat exchanger is simply the product of the thermodynamic driving force X = A(l/T), the natural cause, and its effect, the resultant flow / = Q, a velocity or rate. Selected monographs on irreversible thermodynamics, see, for example, [1], show how entropy generation also has roots in other driving forces such as chemical potential differences or affinities. 

When the chemical reaction reaches equilibrium, affinity vanishes A = 0. The entropy generated per... 

When the chemical reaction reaches equilibrium, affinity vanishes A = —St /za, = 0. The entropy generated per unit time and unit volume is called the rate of volumetric entropy production or the entropy source of density ... 

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