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Heat integration of ammonia-water absorption refrigeration system through heat-exchanger network analysis

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  • Chen, X.
  • Wang, R.Z.
  • Du, S.

Abstract

The heat integration of existing single-effect ammonia-water absorption system is studied. A set of possible heat modifications involving with absorption heat or rectification heat recovery are identified on energy transfer diagram, the performance of each heat modification is studied and compared, and the interaction of heat transfer in generator, absorber, rectifier and solution heat exchanger is investigated through different combinations of heat modifications. There are two approaches of increasing thermal performance, one is aimed to increase the feed temperature of the distillation column by isolating heat exchanger components. The purpose of the other approach is to reduce heat consumption through heat integration by using bridge analysis. The two approaches can both boost the thermal performance effectively. The results demonstrate 22% increases in Coefficient of Performance (COP) compared with traditional single-effect cycle under certain working conditions. In general, obtaining the maximum heat saving capacity in advance under different working conditions is necessary either for retrofit or in preliminary design stage. In this paper, the selection guidance of suitable cycle under different working conditions is provided.

Suggested Citation

  • Chen, X. & Wang, R.Z. & Du, S., 2017. "Heat integration of ammonia-water absorption refrigeration system through heat-exchanger network analysis," Energy, Elsevier, vol. 141(C), pages 1585-1599.
  • Handle: RePEc:eee:energy:v:141:y:2017:i:c:p:1585-1599
    DOI: 10.1016/j.energy.2017.11.100
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    References listed on IDEAS

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    Cited by:

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    3. Lai, Yee Qing & Wan Alwi, Sharifah Rafidah & Manan, Zainuddin Abdul, 2019. "Customised retrofit of heat exchanger network combining area distribution and targeted investment," Energy, Elsevier, vol. 179(C), pages 1054-1066.
    4. Akbari Kordlar, M. & Mahmoudi, S.M.S. & Talati, F. & Yari, M. & Mosaffa, A.H., 2019. "A new flexible geothermal based cogeneration system producing power and refrigeration, part two: The influence of ambient temperature," Renewable Energy, Elsevier, vol. 134(C), pages 875-887.
    5. Lal, Nathan S. & Walmsley, Timothy G. & Walmsley, Michael R.W. & Atkins, Martin J. & Neale, James R., 2018. "A novel Heat Exchanger Network Bridge Retrofit method using the Modified Energy Transfer Diagram," Energy, Elsevier, vol. 155(C), pages 190-204.
    6. Kadam, Sambhaji T. & Gkouletsos, Dimitris & Hassan, Ibrahim & Rahman, Mohammad Azizur & Kyriakides, Alexios-Spyridon & Papadopoulos, Athanasios I. & Seferlis, Panos, 2020. "Investigation of binary, ternary and quaternary mixtures across solution heat exchanger used in absorption refrigeration and process modifications to improve cycle performance," Energy, Elsevier, vol. 198(C).
    7. Xuan Tao & Dhinesh Thanganadar & Kumar Patchigolla, 2022. "Compact Ammonia/Water Absorption Chiller of Different Cycle Configurations: Parametric Analysis Based on Heat Transfer Performance," Energies, MDPI, vol. 15(18), pages 1-28, September.
    8. Wang, Bohong & Klemeš, Jiří Jaromír & Li, Nianqi & Zeng, Min & Varbanov, Petar Sabev & Liang, Yongtu, 2021. "Heat exchanger network retrofit with heat exchanger and material type selection: A review and a novel method," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).

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