A Simple Graphical Utilities Targeting Method for Heat Integration between Processes

Heat integration between processes aims at identifying options for heat recovery and optimal energy conversion during industrial processes. This Article introduces a simple graphical utilities targeting method for heat integration between processes. The problem is formulated as a graphical utilities targeting problem for restricting only the heat flow regarding heating and cooling when using utilities. Therefore, the original process cannot be changed but the utilities themselves could attract savings. A mathematical formulation is presented for choosing optimal heat transfer technologies. The grand composite curves of different processes represent optimal heat transfers between processes. This method is very general; it can be used within new designs and within existing processes’ integrations for utility savings.