Data set on the performance of VRFB cells with serpentine flow fields _Experiemntal and CFD approach

Published: 08-01-2021| Version 2 | DOI: 10.17632/vp4bwt7d2c.2
Contributors:
Ravendra Gundlapalli,
Sreenivas Jayanti

Description

Several life cycle experiments have been conducted on vanadium redox flow battery cells of size 400, 900 and 1500 cm2 active areas at various flow rates and current densities. Electrolyte of concentration 2M VOSO4 dissolved in 5M sulfuric acid is used for testing. Pressure drop measurements at various flow rates have also been measured with circulation of electrolyte solution through the cell. Graphite plates have been engraved with serpentine flow fields of the several flow-channel combinations given in Table 1 of the research article 2. Upon selecting the optimal channel configuration as (5,2,3) (channel width, rib width, channel depth), the same configuration has been extensively studied on three cell areas 416 cm2, 918 cm2 and 1495 cm2 for various flow rates and current densities. In order to interpret the macro performance of these studies, CFD simulations have also been carried out with measured intrusion depths and permeability of felt which gave the pressure drop, fractional split to porous felt and distribution of the electrolyte across the cell. Also, the pressure drop and the fractional split between the flow-channels and felt electrode is predicted by the parallel-path electrolyte circulation model (research article 2). [1] Ravendra Gundlapalli, Sreenivas Jayanti, Effect of Electrolyte Convection Velocity in the Electrode on the Performance of Vanadium Redox Flow Battery Cells with Serpentine Flow Field, Journal of Energy Storage 30 (2020) 101516 [2] Ravendra Gundlapalli, Sreenivas Jayanti, Effect of channel dimensions of serpentine flow fields on the performance of a vanadium redox flow battery, Journal of Energy Storage, 23 (2019) 148–158, https://doi.org/10.1016/j.est.2019.03.014

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