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Optimal configurations of ammonia decomposition reactor with minimum power consumption and minimum heat transfer rate

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  • Huang, Jialuo
  • Xia, Shaojun
  • Chen, Lingen

Abstract

Ammonia decomposition reactor is an important component in process of ammonia hydrogen energy conversion technology where ammonia is the storage and transportation medium for hydrogen. In this research, a tubular ammonia decomposition reactor is modeled according to finite-time thermodynamics. With a fixed hydrogen yield, heat transfer rate and power consumption are taken as optimization targets, and the corresponding optimal temperature distributions outside the tube, that is, the optimal configurations, are obtained through a nonlinear programming method. In addition, the optimized reactor is also analyzed for three parameters: reactant initial temperature, reactant initial pressure, and reaction tube length. The results indicate that heat transfer rate of the optimal reactor with the minimum heat transfer rate and power consumption of the optimal reactor with the minimum power consumption are reduced by 10.5% and 17.26% compared to the reference reactor, respectively. The optimum parameters of the reactor are obtained as a tube length of 8 m, reactant inlet temperature of 450 K, and reactant inlet pressure of 8 bar. The findings of this research are instructive towards the optimal design and operation of ammonia decomposition reactors.

Suggested Citation

  • Huang, Jialuo & Xia, Shaojun & Chen, Lingen, 2024. "Optimal configurations of ammonia decomposition reactor with minimum power consumption and minimum heat transfer rate," Energy, Elsevier, vol. 293(C).
    • Handle: RePEc:eee:energy:v:293:y:2024:i:c:s0360544224004080
    DOI: 10.1016/j.energy.2024.130636
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    References listed on IDEAS

    as
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    8. Chen, Lingen & Xia, Shaojun, 2022. "Maximizing power output of endoreversible non-isothermal chemical engine via linear irreversible thermodynamics," Energy, Elsevier, vol. 255(C).
    9. Chen, Lingen & Xia, Shaojun, 2022. "Maximizing power of irreversible multistage chemical engine with linear mass transfer law using HJB theory," Energy, Elsevier, vol. 261(PB).
    10. Chen, Lingen & Lorenzini, Giulio, 2023. "Heating load, COP and exergetic efficiency optimizations for TEG-TEH combined thermoelectric device with Thomson effect and external heat transfer," Energy, Elsevier, vol. 270(C).
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    13. Chen, Lingen & Qi, Congzheng & Ge, Yanlin & Feng, Huijun, 2022. "Thermal Brownian heat engine with external and internal irreversibilities," Energy, Elsevier, vol. 255(C).
    14. Liang, Tao & Chen, Jingyi & Chen, Xiaohang & Su, Shanhe & Chen, Jincan, 2022. "Trade-off between the near-field heat transfer and the space charge effect in graphene-anode thermionic energy converters," Energy, Elsevier, vol. 260(C).
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    1. Shi, Shuangshuang & Chen, Lingen & Ge, Yanlin & Feng, Huijun, 2024. "Performance optimization of non-isothermal endoreversible chemical pump via Lewis analogy," Energy, Elsevier, vol. 300(C).

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