TY - JOUR
T1 - Influence of the gasket materials on the clamping pressure distribution in a PEM water electrolyzer
T2 - Bolt torques and operation mode in pre-conditioning
AU - Moreno Soriano, Roberto
AU - Rojas, Nuria
AU - Nieto, Emilio
AU - de Guadalupe González-Huerta, Rosa
AU - Sandoval-Pineda, Juan Manuel
N1 - Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC
PY - 2021/7/26
Y1 - 2021/7/26
N2 - To keep optimally connected, all electrolysis cell elements is one of the most important design criteria. The optimal distribution of the clamping points is crucial to increasing cell performance. In this work, the compression pressure distribution inside of a 25 cm2 PEM electrolysis cell was evaluated, using different materials: Teflon®, Viton®, ethylene propylene diene monomer rubber (EPDM), and nitrile rubber. Sealing material evaluation was performed taking as performance indicators: total compressed area (%) and compression pressure, for different torques applied. Pressure distribution was obtained by using pressure-sensitive films, analyzing the distribution of pressure points from three-dimensional plots (3D), and quantifying intensities of the images obtained. Results showed that pressure points distribution depends on the stiffness and thickness of the gasket materials. For a tightening torque of 3.70 N m, a pressure of 2.23 MPa is obtained with 85% of the membrane area compressed using nitrile rubber-EPDM gaskets.
AB - To keep optimally connected, all electrolysis cell elements is one of the most important design criteria. The optimal distribution of the clamping points is crucial to increasing cell performance. In this work, the compression pressure distribution inside of a 25 cm2 PEM electrolysis cell was evaluated, using different materials: Teflon®, Viton®, ethylene propylene diene monomer rubber (EPDM), and nitrile rubber. Sealing material evaluation was performed taking as performance indicators: total compressed area (%) and compression pressure, for different torques applied. Pressure distribution was obtained by using pressure-sensitive films, analyzing the distribution of pressure points from three-dimensional plots (3D), and quantifying intensities of the images obtained. Results showed that pressure points distribution depends on the stiffness and thickness of the gasket materials. For a tightening torque of 3.70 N m, a pressure of 2.23 MPa is obtained with 85% of the membrane area compressed using nitrile rubber-EPDM gaskets.
KW - Bolt torque
KW - Clamping pressure
KW - Gasket materials
KW - Proton exchange membrane electrolysis
UR - http://www.scopus.com/inward/record.url?scp=85103725272&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2021.03.076
DO - 10.1016/j.ijhydene.2021.03.076
M3 - Artículo
AN - SCOPUS:85103725272
SN - 0360-3199
VL - 46
SP - 25944
EP - 25953
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 51
ER -