A novel approach for retrofit and operations management of existing total sites

Area-wide energy saving program in a large industrial area

“…Kimura [9] developed a method for analysis and optimization of a utility systems based on the R-curve concept by Kenney [10] and top-level analysis by Makwana et al [11]. Top-level analysis could be applied for existing total site utility systems to evaluate the current performance and the potential scope for improvement.…”

Utility systems operation: Optimisation-based decision making

“…In [10], a new top-down procedure for retrofit of existing total sites was introduced. First, a top-level analysis of the utility system is performed to identify the scope for energy savings.…”

A simultaneous optimization approach for the design of wastewater and heat exchange networks based on cost estimation

“…It also involves a defined set of available water sources with different properties and corresponding costs [21]. The water and energy targets for this system need to be identified.…”

“…Moreover, oil refinery processes employ a wide array of solvents, which make contact with process streams and have different aqueous solubility, to extract both desirable and undesirable components from feedstock [21]. The major water-using units employed in oil refinery processes are atmospheric distillation units (CDU), hydrodesulfurization units (HDS), crude desalters, cooling towers, and boiler houses.…”

“…Mathematical programming for MEN synthesis has been intensely studied over the last decade [13][14][15]. As studies concerning the synthesis of HENs and MENs have made steady progress, synthesis methods for combined HENs and MENs [16][17][18][19][20] and studies of the total sites [21][22][23][24] have gradually begun to receive attention.…”