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The study is divided into two parts. First, this work defines fundamental physical variables for assessing the thermal energy storage potential of tunnels and other underground structures used
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High-temperature technologies can be used for short- or long-term storage, similar to low-temperature technologies, and they can also be categorised as sensible, latent and thermochemical storage of
Energy storage in underground tunnels is revolutionizing how we manage electricity grids, offering solutions for renewable energy''s biggest headache: intermittency. This article explores
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Specifically, this work addresses the storage performance of energy tunnels in different subsurface environmental conditions influenced by convection through 3-D thermo-hydraulic finite element
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What pumped storage projects rely on is elevation. Pumped storage projects utilize two reservoirs close together with a significant elevation difference. These two reservoirs are connected by tunnels that
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