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Performance of conical ammonia dissociation reactors for solar thermochemical energy storage

Author

Listed:
  • Chen, Chen
  • Liu, Yi
  • Aryafar, Hamarz
  • Wen, Tao
  • Lavine, Adrienne S.

Abstract

Solar thermochemical energy storage cannot only have a high energy density but the capability of storing energy at ambient temperature with little heat loss. Recently, lots of research has been done to advance the heat recovery process of an ammonia synthesis system in the context of ammonia-based solar thermochemical energy storage. However, there has not been much enhancement proposed to improve the conversion of the ammonia dissociation reactor, which determines the solar energy absorbed. This paper explores the effects of geometry and configuration on the conversion of ammonia dissociation reactors. A two-dimensional pseudo-homogeneous model has been developed to simulate reaction kinetics and thermodynamics in conical as well as cylindrical ammonia dissociation reactors. The model has been validated by comparing model-predicted and experimentally measured reactor wall temperature profiles and conversions. The effect of the configuration, i.e., cylindrical, diverging and converging, on reactor performance has been investigated. The results show that converging reactors can achieve a higher conversion with a fixed preheating heat exchanger, i.e., a 5.3% increase in the conversion with less than a 1° slope in the tube wall.

Suggested Citation

  • Chen, Chen & Liu, Yi & Aryafar, Hamarz & Wen, Tao & Lavine, Adrienne S., 2019. "Performance of conical ammonia dissociation reactors for solar thermochemical energy storage," Applied Energy, Elsevier, vol. 255(C).
    • Handle: RePEc:eee:appene:v:255:y:2019:i:c:s0306261919314722
    DOI: 10.1016/j.apenergy.2019.113785
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    Citations

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    Cited by:

    1. Qi Xia & Shuaiming Feng & Mingmin Kong & Chen Chen, 2021. "Efficiency Enhancement of an Ammonia-Based Solar Thermochemical Energy Storage System Implemented with Hydrogen Permeation Membrane," Sustainability, MDPI, vol. 13(22), pages 1-13, November.
    2. Cabeza, Luisa F. & de Gracia, Alvaro & Zsembinszki, Gabriel & Borri, Emiliano, 2021. "Perspectives on thermal energy storage research," Energy, Elsevier, vol. 231(C).
    3. Miguel Castro Oliveira & Muriel Iten & Henrique A. Matos, 2022. "Review of Thermochemical Technologies for Water and Energy Integration Systems: Energy Storage and Recovery," Sustainability, MDPI, vol. 14(12), pages 1-17, June.
    4. Chen, Xiaoyi & Jin, Xiaogang & Ling, Xiang & Wang, Yan, 2020. "Indirect integration of thermochemical energy storage with the recompression supercritical CO2 Brayton cycle," Energy, Elsevier, vol. 209(C).
    5. Arias, I. & Cardemil, J. & Zarza, E. & Valenzuela, L. & Escobar, R., 2022. "Latest developments, assessments and research trends for next generation of concentrated solar power plants using liquid heat transfer fluids," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).

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