Energy Storage Science and Technology ›› 2015, Vol. 4 ›› Issue (5): 506-509.doi: 10.3969/j.issn.2095-4239.2015.05.008

• Research &development • Previous Articles     Next Articles

The measurement of Kozeny-Carman constant in porous electrode of vanadium flow battery

XING Feng1, ZHENG Qiong2, 3, ZHANG Huamin1, 4, LI Xianfeng1, MA Xiangkun4   

  1. 1 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    2 Graduate University of the Chinese Academy of Sciences, Beijing 100039, China;
    3 School of Chemical Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China;
    4 Dalian Rongke Power Co., Ltd., Dalian 116025, Liaoning, China
  • Received:2015-08-01 Online:2015-10-19 Published:2015-10-19

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Abstract: Based on Darcy equation, pressure differences at different volume flow rates are measured on the test platform of the electrolyte flow characteristics. The Kozeny-Carman constant is 24.087, evaluated from the linear relationship between pressure differences and flow rates. The accuracy of the calculation is improved. The average value of the relative errors to the experimental data is less than 3%.

Key words: vanadium flow battery, Kozeny-Carman constant, Darcy equation

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