New procedure for optimal design of cogeneration system with considering environmental impacts and total cost

In this paper, a new procedure is introduced for optimal design of utility system in process industries. This method is based on the development of the R-curve concept and cogeneration targeting through estimating costs, environmental impacts, and exergoeconomic analysis. This new method can be applied for the synthesis of site utility system in process industries with considering total cost, environmental impacts, and exeregoeconomic analysis. In this regard, the powerful and accurate cogeneration targeting method is provided. The procedure which is proposed here provided a consistent, general procedure for determining mass flowrates and efficiencies of the applied turbines. Also, the new graphical representations are proposed. These curves can be easily constructed and simply understood. In addition, the optimal design of site utility is carried out in two case studies, in which the usefulness of this method is clearly demonstrated.