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Development of SrBr2 composite sorbents for a sorption thermal energy storage system to store low-temperature heat

Author

Listed:
  • Zhao, Y.J.
  • Wang, R.Z.
  • Zhang, Y.N.
  • Yu, N.

Abstract

A composite material was developed as sorbent for sorption thermal energy storage (TES) which was used to recycle the low-temperature heat in industry and life fields in this study. The composite sorbent was formed by strontium bromide (SrBr2) and the additive of expanded natural graphite treated with sulfuric acid (ENG-TSA). Sorption characteristics, kinetic sorption performance, thermal conductivity and permeability of 15 samples were studied. The material test results indicated the following: (1) the composite SrBr2 is of high energy density and good mass transfer performance; (2) it can be regenerated below 100 °C; (3) the additive of ENG-TSA greatly improves the heat transfer performance, while no degradation is observed on sorption water uptake; (4) the optimal composite sorbent is of 743 kg/m3 and with 10 wt% ENG-TSA.

Suggested Citation

  • Zhao, Y.J. & Wang, R.Z. & Zhang, Y.N. & Yu, N., 2016. "Development of SrBr2 composite sorbents for a sorption thermal energy storage system to store low-temperature heat," Energy, Elsevier, vol. 115(P1), pages 129-139.
    • Handle: RePEc:eee:energy:v:115:y:2016:i:p1:p:129-139
    DOI: 10.1016/j.energy.2016.09.013
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    References listed on IDEAS

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    1. Yu, N. & Wang, R.Z. & Lu, Z.S. & Wang, L.W. & Ishugah, T.F., 2014. "Evaluation of a three-phase sorption cycle for thermal energy storage," Energy, Elsevier, vol. 67(C), pages 468-478.
    2. Michel, Benoit & Mazet, Nathalie & Mauran, Sylvain & Stitou, Driss & Xu, Jing, 2012. "Thermochemical process for seasonal storage of solar energy: Characterization and modeling of a high density reactive bed," Energy, Elsevier, vol. 47(1), pages 553-563.
    3. Zondag, Herbert & Kikkert, Benjamin & Smeding, Simon & Boer, Robert de & Bakker, Marco, 2013. "Prototype thermochemical heat storage with open reactor system," Applied Energy, Elsevier, vol. 109(C), pages 360-365.
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