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Practical heat pump and storage integration into non-continuous processes: A hybrid approach utilizing insight based and nonlinear programming techniques

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  • Stampfli, Jan A.
  • Atkins, Martin J.
  • Olsen, Donald G.
  • Walmsley, Michael R.W.
  • Wellig, Beat

Abstract

This paper focuses on industrial heat pump (HP) integration in non-continuous processes. To achieve the necessary time-wise process decoupling of the HP system, heat recovery loops (HRLs) with stratified storages are used. This design type can be modeled as a mixed integer nonlinear programming problem which often results in expensive mathematical formulations. The challenge is addressed by a practical method that combines the insight based approach of Pinch Analysis with mathematical programming techniques to give the engineer more flexibility for the application of the method and to avoid long computation times. By the use of the insight based methods, the solution space of the mathematical formulation is restricted, and thus its complexity is reduced to a nonlinear programming problem optimizing the temperature levels in the HP-HRL system. As an objective, total annual costs (TAC) of the HP-HRL system are minimized. The developed hybrid method is applied to a dairy site and compared in terms of approach temperatures, temperature lift of the HP, TAC, and greenhouse gas emissions to the existing methods. It is shown, that the hybrid method provides realistic approach temperatures in contrast to the existing insight based method.

Suggested Citation

  • Stampfli, Jan A. & Atkins, Martin J. & Olsen, Donald G. & Walmsley, Michael R.W. & Wellig, Beat, 2019. "Practical heat pump and storage integration into non-continuous processes: A hybrid approach utilizing insight based and nonlinear programming techniques," Energy, Elsevier, vol. 182(C), pages 236-253.
    • Handle: RePEc:eee:energy:v:182:y:2019:i:c:p:236-253
    DOI: 10.1016/j.energy.2019.05.218
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    Cited by:

    1. Svitnič, Tibor & Sundmacher, Kai, 2022. "Renewable methanol production: Optimization-based design, scheduling and waste-heat utilization with the FluxMax approach," Applied Energy, Elsevier, vol. 326(C).
    2. Florian Schlosser & Heinrich Wiebe & Timothy G. Walmsley & Martin J. Atkins & Michael R. W. Walmsley & Jens Hesselbach, 2020. "Heat Pump Bridge Analysis Using the Modified Energy Transfer Diagram," Energies, MDPI, vol. 14(1), pages 1-24, December.
    3. Walden, Jasper V.M. & Wellig, Beat & Stathopoulos, Panagiotis, 2023. "Heat pump integration in non-continuous industrial processes by Dynamic Pinch Analysis Targeting," Applied Energy, Elsevier, vol. 352(C).
    4. Raphael Agner & Benjamin H. Y. Ong & Jan A. Stampfli & Pierre Krummenacher & Beat Wellig, 2022. "A Graphical Method for Combined Heat Pump and Indirect Heat Recovery Integration," Energies, MDPI, vol. 15(8), pages 1-21, April.
    5. Schlosser, F. & Jesper, M. & Vogelsang, J. & Walmsley, T.G. & Arpagaus, C. & Hesselbach, J., 2020. "Large-scale heat pumps: Applications, performance, economic feasibility and industrial integration," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    6. Möhren, S. & Meyer, J. & Krause, H. & Saars, L., 2021. "A multiperiod approach for waste heat and renewable energy integration of industrial sites," Renewable and Sustainable Energy Reviews, Elsevier, vol. 148(C).
    7. Limei Gai & Petar Sabev Varbanov & Timothy Gordon Walmsley & Jiří Jaromír Klemeš, 2020. "Critical Analysis of Process Integration Options for Joule-Cycle and Conventional Heat Pumps," Energies, MDPI, vol. 13(3), pages 1-25, February.
    8. Leopold Prendl & René Hofmann, 2021. "Case Study of Multi-Period MILP HENS with Heat Pump and Storage Options for the Application in Energy Intensive Industries," Energies, MDPI, vol. 14(20), pages 1-21, October.

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