Abstract
The increasing need for energy storage technology has led to a massive interest in novel energy storage methods. The energy geomembrane system is such a novel energy storage method. The concept of the system is briefly introduced, and a holistic numerical model of the system is presented. The model uses advanced finite-element techniques to model the energy storage system using fluid cavity elements. The developed geomembrane energy system is modelled with different constitutive models to represent the soil behaviour: a linear elastic model, a nonlinear Mohr-Coulomb model, and a hypoplastic constitutive model. The consequences of these different models on the results are studied. Hereby, the focus is the first inflation and deflation cycle of the system.
Highlights
The global effort to reduce and minimize anthropogenic greenhouse gas emissions requires an increase in the use of renewable energy sources
The developed geomembrane energy system is modelled with different constitutive models to represent the soil behaviour: a linear elastic model, a nonlinear Mohr-Coulomb model, and a hypoplastic constitutive model
3.1 Impact of constitutive models on deformation pattern of the overburden soil The modelling of the Energy membrane-UPHS (EM-UPHS) was done with different constitutive models to prove the general concept and compare the capabilities for a further study of the energy storage system
Summary
The global effort to reduce and minimize anthropogenic greenhouse gas emissions requires an increase in the use of renewable energy sources. Different scales and principle energy storage technologies are commonly used or are in development, e.g. shallow and deep geothermal energy storage systems [2, 3, 4], electrical energy storage systems, the transformation of energy (Power-to-Gas), and mechanical energy storage systems (compressed air reservoirs, pumped hydro reservoirs) [5]. Some of these systems are technically demanding.
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