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Optimization of an industrial retrofitted heat exchanger network, using a stage-wise model

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  • Kovač Kralj, Anita

Abstract

The heat exchanger network (HEN) can be optimized using the stage-wise model of superstructure representation, as proposed by Yee and Grossmann. This model can be easily solved regarding both trivial problems, and serious and complex new industrial design plants. In this paper, a stage-wise model for new designs is extended for retrofits by using a stage-wise model for a retrofitted HEN. This method using a stage-wise model is very general; it can be used in new designs as well as during existing process integration. The methodology of the stage-wise model for retrofitted HEN can be used to solve HENs easily and well enough, over a short time, and simultaneously. A mathematical model of stage-wise for retrofit HEN can include additional equations and limitations for retrofits. This model was tested by using a retrofitted methanol process generating an additional profit of 189,200 EUR/a.

Suggested Citation

  • Kovač Kralj, Anita, 2010. "Optimization of an industrial retrofitted heat exchanger network, using a stage-wise model," Energy, Elsevier, vol. 35(12), pages 4748-4753.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:4748-4753
    DOI: 10.1016/j.energy.2010.09.016
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    Cited by:

    1. Liu, Pu & Cui, Guomin & Xiao, Yuan & Chen, Jiaxing, 2018. "A new heuristic algorithm with the step size adjustment strategy for heat exchanger network synthesis," Energy, Elsevier, vol. 143(C), pages 12-24.
    2. Mosadeghkhah, A. & Beheshti, M., 2020. "Heat flow diagram as an extension of bridge retrofit method to save energy in heat exchanger networks," Applied Energy, Elsevier, vol. 267(C).
    3. Soltani, Hadi & Shafiei, Sirous, 2011. "Heat exchanger networks retrofit with considering pressure drop by coupling genetic algorithm with LP (linear programming) and ILP (integer linear programming) methods," Energy, Elsevier, vol. 36(5), pages 2381-2391.
    4. Pan, Ming & Smith, Robin & Bulatov, Igor, 2013. "A novel optimization approach of improving energy recovery in retrofitting heat exchanger network with exchanger details," Energy, Elsevier, vol. 57(C), pages 188-200.
    5. Sreepathi, Bhargava Krishna & Rangaiah, G.P., 2014. "Improved heat exchanger network retrofitting using exchanger reassignment strategies and multi-objective optimization," Energy, Elsevier, vol. 67(C), pages 584-594.

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