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A Study on Flow Characteristics and Flow Uniformity for the Efficient Design of a Flow Frame in a Redox Flow Battery
- Source :
- Applied Sciences, Vol 10, Iss 3, p 929 (2020), Applied Sciences, Volume 10, Issue 3
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- As global environmental problems are worsening, the efficiency of storage systems for renewable energy are gaining importance. The redox flow battery (RFB), a promising energy storage system (ESS), is a device that generates or stores electricity through reduction&ndash<br />oxidation reactions between active materials constituting electrolytes. Herein, we proposed a flow frame design that reduces flow resistance in the flow path and causes uniform flow distribution in the electrode to develop an efficient redox flow battery. Through computational fluid dynamics (CFD) and experimental verification, we investigated the flow characteristics and flow uniformity inside the conventional redox flow battery cell. An analysis of the flow characteristics of the conventional flow frame revealed a non-uniform distribution of the flow discharged to the electrodes, owing to the complex (branched) flow path geometry of the inlet channel. To address this problem, we proposed a new flow frame design that removed and integrated bifurcations in the flow path. This new design significantly improved flow uniformity parameters, such as the symmetry coefficient (), variability range coefficient (), and maximum flow rate deviation (). Ultimately, we decreased the pressure drop by 15.3% by reducing the number of flow path bifurcations and chevron repositioning.
- Subjects :
- Imagination
Materials science
Chemical substance
020209 energy
media_common.quotation_subject
flow characteristics
02 engineering and technology
Computational fluid dynamics
lcsh:Technology
Energy storage
lcsh:Chemistry
0202 electrical engineering, electronic engineering, information engineering
General Materials Science
flow uniformity
Instrumentation
lcsh:QH301-705.5
media_common
pressure drop
Fluid Flow and Transfer Processes
Pressure drop
business.industry
lcsh:T
Process Chemistry and Technology
General Engineering
Mechanics
021001 nanoscience & nanotechnology
Flow battery
lcsh:QC1-999
Computer Science Applications
redox flow battery (rfb)
Flow (mathematics)
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
flow frame
Potential flow
computational fluid dynamics (cfd)
0210 nano-technology
business
lcsh:Engineering (General). Civil engineering (General)
lcsh:Physics
Subjects
Details
- Language :
- English
- ISSN :
- 20763417
- Volume :
- 10
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Applied Sciences
- Accession number :
- edsair.doi.dedup.....dc3f7e73c795dcaec1284a39f9decdbc