Synthesis of energy efficient chilled and cooling water network by integrating waste heat recovery refrigeration system

Process Evaluation and Optimization of Acetone Dehydration With Advanced Heat Integration Technology by the Techno-Economic Analysis

“…Assume the hot water stream as 80 o C, it can be used as the heat source of C3. [14,15] It is clear that the energy cost of C2 and C3 can be decrease enormously via such heat integration structure, while the small heat transfer difference required heat-exchangers with much larger heat transfer area, which obviously brings a capital cost increase. Thus, it is also necessary to apply the TAC optimization to processes with heatintegrated structures.…”

Study of a Novel Hybrid Refrigeration System, with Natural Refrigerants and Ultra-Low Carbon Emissions, for Air Conditioning

“…Hybrid refrigeration systems that combine absorption and vapor compression refrigeration systems have the potential to improve overall energy efficiency and reduce carbon emissions. Chan et al developed a hybrid system for cooling by driving an absorption refrigeration system with condensing heat recovery, resulting in a 53% reduction in carbon emissions [20]. Similarly, Jain et al developed a vapor compression-absorption hybrid refrigeration system, with power consumption 170.4% lower than a vapor compression system [21].…”

A Hybrid Metaheuristic–Deterministic Optimization Strategy for Waste Heat Recovery in Industrial Plants

“…Chang et al 32 proposed an efficient optimization algorithm through a convex reformulation using a piecewise relaxation for designing heat recovery circuits (HRL) for the integration of waste heat between plants, considering low-temperature heat. Chan et al 33 integrated an AR cycle with a vapor compression refrigeration system (VCRS) to synthesize, at the same time, an energy efficient chilled and cooling water network, and to further enhance energy efficiency, a secondary waste heat recovery was proposed, whereas Yu et al 34 proposed a two-step method for integrating an ORC into a background process involving modifications of the ORC to increase the thermal efficiency and heat recovered by the working fluid while the optimal configuration and operating conditions were determined, and the number of heat exchangers was minimized. Elsido et al 35 presented a novel bilevel decomposition algorithm combining the outer-approximation linearization technique with McCormick relaxation, valid redundant constraints, piecewise linearization of cost functions, and integer cuts, which was applied to the simultaneous synthesis and design of the HEN integrated with complex utility systems through the combination of two superstructures.…”