Simultaneous optimization of energy and water use in multipurpose batch plants

This chapter presents a mathematical technique for simultaneous optimization of energy and water in multipurpose batch facilities. The technique is based on time average model (TAM) and time slice model (TSM), where the time slice is a variable determined by optimization to keep the flexibility of the schedule, as compared to previous models based on fixed schedule and fixed time slice for heat integration. The scheduling mathematical formulation that forms the basis of the entire integrated framework is presented in detail in Chapter 2 of this book. The benefits of addressing this complex problem within a comprehensive framework are demonstrated through comparisons with published work.