Analysis of Fluid Flow in Redox Flow Batteries

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Analysis of Fluid Flow in Redox Flow Batteries ( analysis-fluid-flow-redox-flow-batteries )

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Reference Gerhardt, Wong, Aziz [38] MacDonald, Darling [82,83] PFF set of equations βˆ†π‘ƒπ‘ƒπΉπΉ = 64πœ‡π‘„πΏπ‘(𝑀𝑐 + π‘€π‘Ÿ) IFF set of equations βˆ†π‘ƒ =βˆ†π‘ƒ (1+ 2 𝛽2 = 128𝐿𝑐𝐾h𝑝 𝑀 𝑀 h 𝑑2 π‘Ÿ 𝑐 𝑐 h βˆ†π‘ƒ 𝑃𝐹𝐹 𝑀 𝑀h𝑑2 𝐹𝐹 𝑐 𝑐 h = 32πœ‡π‘£π‘πΏπ‘ πœ“π‘‘2 h 𝐼𝐹𝐹 𝑃𝐹𝐹 2 + 2 cosh 𝛽 𝛽sinh𝛽 ) πœ“ = 1.5 βˆ’ 2.0330π‘Ž + 2.9201π‘Ž2 βˆ’ 2.5518π‘Ž3 +1.4366π‘Ž4 βˆ’ 0.3806π‘Ž5 π‘Ž=min(h𝑐,𝑀𝑐)⁄max(h𝑐,𝑀𝑐) 𝑣𝑐 = 𝑄 𝑁𝐴𝑐 𝑃𝐹𝐹:𝑣𝑝 =32𝑣𝑐𝐾2 { 𝐴𝑐 𝐼𝐹𝐹:𝑣𝑝= 𝑄 𝑁h𝑝𝐿𝑐 3.7- Experimental setup 3.7.1- Differential pressure measurement assembly (DPMA) As illustrated in Figure 3. 6, the DPMA consists of a differential pressure gauge (DPG) (Dwyer Capsuhelic differential pressure gauge- series 4000), tubing, and connectors. T-connectors draw portions of the flow from inlet and outlet of the RFB cell and are guided to the DPG. The Capsuhelic DPG measures the pressure difference by a fixed-ended silicone rubber diaphragm, which its center is connected to a precision spring. The high-pressure fluid line is connected to the front of the diaphragm, while the low-pressure one is connected to the back. The difference in the applied pressure by both lines deforms the diaphragm, which its displacement at the center is reported by the gauge indicator attached to the precision spring (A side cross-sectional diagram of 39

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