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- W2556589329 abstract "This work addresses the optimal design of a flexible heat exchanger network using model-based optimization, applied to hydrogen production by means of an ethanol steam reforming process. High efficiencies are obtained at different hydrogen production levels ranging from 25 to 100% of a nominal output. System structure, heat exchanger sizing, and operation conditions are simultaneously settled, ensuring both operational feasibility and optimality. The system involves a reforming reactor, vaporization and reheating equipment, combustors, and a heat exchanger network system. A multi-period nonlinear optimization problem (NLP) was formulated to account for the production level distribution. Equipment sizing constraints and structural constraints link the different scenarios. The trade-off between area and efficiency is analyzed using a multi-objective epsilon-constraint approach. Models were developed in the GAMS environment. The resulting solutions, for the maximum area case, maintain alcohol combustion at low levels showing efficiencies around 63% in each operational level. Pareto Optimal diagram shows that a 1% reduction of efficiency allows a 50% decrease in total required heat exchanger area by 50%." @default.
- W2556589329 created "2016-11-30" @default.
- W2556589329 creator A5071525946 @default.
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- W2556589329 date "2017-02-01" @default.
- W2556589329 modified "2023-10-18" @default.
- W2556589329 title "Flexible heat exchanger network design of an ethanol processor for hydrogen production. A model-based multi-objective optimization approach" @default.
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- W2556589329 doi "https://doi.org/10.1016/j.ijhydene.2016.10.156" @default.
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