Entropy/enthalpy diagram, combustion

Knoche 4) plotted the reactants and reaction products in one enthalpy, entropy diagram by superposition, thus he was able to evaluate immediately the irreversible entropy production, respectively the exergy losses of the combustion (see Figure 2). 

Figure 2, Enthalpy, entropy diagram with exergy for reactants e and reaction products after an adiabatic, isobaric combustion (4).

Figure 4. Enthalpy, entropy diagram with exergy for reactants e- and reaction products 2 after an isothermal, isobaric combustion Q4) The change of state from 1 to la is a release of heat at constant temperature, therefore the entropy decreases.

---