CIESC Journal ›› 2021, Vol. 72 ›› Issue (8): 4354-4360.DOI: 10.11949/0438-1157.20201665

• Energy and environmental engineering • Previous Articles     Next Articles

Effect of liquid height in regeneration reactor on performance of thermal regeneration battery

Yu SHI1,2,Qiang JIANG1,2,Liang ZHANG1,2(),Jun LI1,2,Qian FU1,2,Xun ZHU1,2,Qiang LIAO1,2   

  1. 1.School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China
    2.Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China
  • Received:2020-11-18 Revised:2021-01-04 Online:2021-08-05 Published:2021-08-05
  • Contact: Liang ZHANG

再生反应器液面高度对热再生电池性能的影响

石雨1,2,蒋强1,2,张亮1,2(),李俊1,2,付乾1,2,朱恂1,2,廖强1,2   

  1. 1.重庆大学能源与动力工程学院,重庆 400030
    2.重庆大学工程热物理研究所,重庆 400030
  • 通讯作者: 张亮
  • 作者简介:石雨(1996—),男,博士研究生,cquietp2018shiyu @hotmail.com
  • 基金资助:
    国家自然科学基金面上项目(51976018);重庆市留学人员创业创新支持计划创新资助重点项目(cx2017020);中央高校基本科研业务费(10611 2016CDJXY 145504);低品位能源利用技术及系统教育部重点实验室固定人员科研基金(LLEUTS-2018005)

Abstract:

Thermal regeneration process is an important part of the thermal regenerative ammonia-based battery (TRB) system. In this study, the effect of the thermal regeneration process of TRB on the power generation is studied, and the thermal regeneration performance is enhanced by reducing the liquid height in thermal regeneration process. The results show that the maximum power density of TRB with regenerated electrolyte is only 12 W/m2, which is 59% lower than that of TRB with initial electrolyte (29.6 W/m2); the average thermal resistance and temperature difference of regeneration electrolyte can be reduced by decreasing the height of liquid, and the thermal regeneration performance can be effectively enhanced; when the liquid height is reduced to 1 cm, the maximum power density of TRB is significantly improved (27.0 W/m2), only 8.7% lower than that of the original TRB. In the future, it is expected to further strengthen the thermal regeneration process and improve the thermal regeneration performance of the battery by constructing a thin liquid film thermal regeneration reactor.

Key words: thermal regenerative battery, regeneration reactor, electrochemistry, regeneration, heat transfer

摘要:

热再生过程是热再生电池(thermally regenerative battery,TRB)系统的重要部分,本文研究了TRB的热再生过程对产电过程的影响,并通过降低热再生液面高度来强化换热过程和提升热再生性能。结果表明,采用再生电解液的TRB最大功率密度仅有12 W/m2,相比于初始电解液的TRB(最大功率密度为29.6 W/m2)降低了59%;降低加热液面高度可减小再生液平均热阻和受热温差,有效地强化了热再生性能;当热再生液面高度降低至1 cm后,热再生后TRB性能显著提升(27.0 W/m2),与原性能相比仅下降8.7%。后续有望通过构建薄液膜热再生反应器来进一步强化热再生过程及提升电池热再生性能。

关键词: 热再生电池, 再生反应器, 电化学, 再生, 传热

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