Process modification of Total Site Heat Integration profile for capital cost reduction

From heat integration targets toward implementation – A TSA (total site analysis)-based design approach for heat recovery systems in industrial clusters

“…Design, operation, reliability, availability and maintenance and regulations issues are discussed in their work. Chew et al also investigated TSHI considering pressure drops [9] and utilizing the TSHI profiles for assessing process modifications to decrease capital costs [10]. Nemet et al suggested a methodology for designing site utility systems considering fluctuating utility costs over the entire life cycle [11].…”

“… 10. shows the changes in the NPV15 of different heat recovery systems if the costs for HP steam and investments are varied.…”

Applied thermal engineering solutions through process integration, modelling and optimisation

“…A systematic Total Site heat integration methodology that aims to reduce the capital cost of heat transfer units at Total Sites is presented in Chew et al [31]. The methodology employs a set of heuristic rules that enable the identification and prioritization of the strategic process modifications that have the greatest impact on the Total Site performance.…”

“…There is a great need for new tools that can unveil the major underlying phenomena and provide insights into the main trends and bottlenecks of such networks. Four contributions cover the area of process tools for thermal network design and optimisation offering superstructure optimization [29], tools for the strategic introduction of renewables in community energy networks [30], total site heat integration [31], and heat exchanger network retrofit through a novel visualisation decision support tool [32].…”

A Steam Utility Network Model for the Evaluation of Heat Integration Retrofits – A Case Study of an Oil Refinery

“…For example, Liew et al [9] proposed a tool for optimum design and planning of the utility system in a Total Site considering sensitivity to variations in operating conditions. Other examples include a Total Site Heat Integration targeting approach that incorporates plant layout considerations such as pressure drop and heat losses in the steam utility system [10] and a methodology to identify process modifications that will improve Total Site Heat Integration targets [11]. Retrofit frameworks for the Total Site have been proposed by Liew et al [12], who implement a top-down retrofit concept that starts from the Total Site context and considers both direct and indirect heat transfer opportunities and by Gharaie et al [13], who presented a retrofit strategy for site-wide emissions reductions that takes a holistic approach for conceptual design related to process changes, heat recovery in individual processes, efficient heat and power generation in the utility system and fuel switching.…”