Permeability Modeling and Estimation of Hydrogen Loss through Polymer Sealing Liners in Underground Hydrogen Storage

Fluctuations in renewable energy production, especially from solar and wind plants, can be solved by large-scale storage. One of the possibilities is storing form hydrogen or methane–hydrogen blends. A viable alternative for salt caverns Lined Rock Cavern (LRC) underground most significant challenges LRC storage sealing liners, which need to have satisfactory mechanical properties. An experimental study permeability different kinds polymers was conducted, followed modeling these materials with additives (graphite, halloysite fly ash). Fillers an impact on ratio reduce amount polymer required make a liner reservoir. Results this show that coefficients estimated leakage through are similar results rock after creep process. During 60 days tank 1000 m2 inner surface, 1 cm thick gas pressure 1.0 MPa, only approx. m3 STP will diffuse The also carries out materials, using Maxwell model. difference between model up 17%, compared differences exceeding 30% some other studies.