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Advances in Engineering Research, volume 163 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018) Simulation of the all-vanadium redox flow battery with composite arched channel Jiangqi Zhou, Min Wang and Xin Li* School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China 1050072101@qq.com (J.Z.), 1142128092@qq.com (M.W.), klkxlx@163.com (X. L.) Keywords: Vanadium flow battery, Mathematical model, Flow channel, Field synergy Abstract. The all vanadium flow redox battery (VRB) has been widely studied and is one of the most compelling storage technologies. Here, A new channel structure, that is, a composited arched flow channel, is presented and compared with rectangular, serpentine channel. Numerical simulations are used to study the effects of channel structures on the concentration field, the temperature field, the pressure field and the charge-discharge curves in batteries. The results are analyzed based on the field synergy principle, which indicate that the composited arched channel has the advantages of homogeneous flow and low pumping costs and is more beneficial to battery performance. Introduction Since the 20th century, the energy crisis has become a serious impediment to sustainable development. play an important role in rapid economic development. The most compelling of such rechargeable batteries is the all-vanadium redox battery (VRB), which has important applications in many fields [1, 2]. With the rapid development of VRB, mathematical model studies on VRB cell have also been conducted [3, 4]. In this paper, various flow channel configurations for a VRB are developed in this paper. The configurations include rectangular, serpentine, and composite arched channels. The principle of field synergy is used to analyze the results microscopically. Model assumption Geometry model (a) (b) (c) Fig. 1 Geometry models of VRB with different flow channels: (a) rectangular, (b) serpentine, and (c) composite arched channel structure This work first examines the cell membrane-electrode assemblies (MEA) of a VRB to simplify the mathematical model. Sulfuric acid solutions containing vanadium oxide ions and vanadium ions Copyright © 2018, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). 1887PDF Image | Simulation all-vanadium redox flow battery arched channel
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