Substituting Q p;T for Q and I p;T ðtÞ for IðQ ; p; tÞ in (2), the objective function can be reduced from a three-variable formula- tion into a two-variable (p and T) formulation
Substituting Q p;T for Q and I p;T ðtÞ for IðQ ; p; tÞ in (2), theobjective function can be reduced from a three-variable formula-tion into a two-variable (p and T) formulation