Overall Heat Balance and Design Equations

Overall Heat-Balance and Design Equations with Single and Multiple Reactions 

Here i is an index used for numbering all components involved in the reaction, i.e., the reactants and products. If any product i is not included in the feed, then we put rii f = 0 and if a reactant j does not exist in the output then we put rij = 0.  

Note that the above equation does not contain any heat of reaction terms. These are automatically included as will become clear in next few lines. 

If we define a reference state r and we add and subtract the terms JT n, f Hir(Tr, Pr, nir) and ) T n, 11 ir(Tr, Pr, 7rlr), respectively, twice to equation (6.19), then after further rearrangement of the terms, we obtain the heat-balance equation in the form 

From the mass balance of a single reaction we have 

---