Abstract
Development of a redox flow battery (RFB) goes hand in hand with sealing technology. Mechanical variations on different RFB components affect the sealing performance. The clamping force generated by through-bolt-joints to assimilate compression, which must provide enough contact stress on the elastomeric seals and flanges over a stacked design to seal off leakage paths. Tolerances must be set according to norms or a well-defined compression range. Most mechanical variations are due to geometrical irregularities from manufacturing. The seal and other components also undergo time-dependent deformations due to stress relaxation and swell. Experiments and mathematical analysis determine initial RFB design conditions.
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