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A Novel Hybrid Exergy/Pinch Process Integration Methodology

Abstract : The trend of global energy demand forecasts a continuous increase in the forthcoming years together with a diversification and differentiation of energy sources. In order to ensure the energy systems transition towards a sustainable functioning mode while avoiding early depletion of energy resources, industrial activities need to foster process improvement. For decades, efforts allowed valuable energy efficiency improvements, operating costs reductions and minimization of environmental impacts. Among energy efficient process design methodologies, pinch analysis and exergy analysis are two powerful methods but each one shows drawbacks. This paper introduces a new methodology based on the Jacobian Matrix of exergy destruction as a mathematical indicator to couple the Pinch and the exergy analysis and overcome their individual limitations. In the proposed approach, exergy analysis is used not only to assess the exergy losses but also to guide the changes needed in industrial processes structures and operating conditions. And while the pinch analysis considers only heat integration, the proposed methodology allows including other recoverable exergy in a process. The guidelines of the methodology are detailed and applied on a natural gas liquefaction process to prove its effectiveness. The main advantage of the methodology is time saving compared to holistic operating conditions improvement as in the traditional process design methods and automatic process structure modification leading to better heat integration.
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Conference papers
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01561388
Contributor : Joelle Andrianarijaona <>
Submitted on : Wednesday, July 12, 2017 - 4:43:37 PM
Last modification on : Wednesday, January 13, 2021 - 3:22:02 PM

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  • HAL Id : hal-01561388, version 1

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Christelle Bou Malham, Rodrigo Rivera-Tinoco, Zoughaib Assaad, Denis Chrétien, Mai Riche, et al.. A Novel Hybrid Exergy/Pinch Process Integration Methodology. 30th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems (ECOS 2017), Jul 2017, San Diego, Californie, United States. ⟨hal-01561388⟩

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