Topology Optimization of Steel-lined Rock Caverns for Underground Storage of Chemical Energy

Autor: Stojan Kravanja, Primož Jelušič, Tomaž Žula, Zdravko Kravanja
Rok vydání: 2022
Zdroj: 3rd International Conference on Technologies & Business Models for Circular Economy: Conference Proceedings.
DOI: 10.18690/um.fkkt.2.2022.5
Popis: The paper presents the topology optimization of lined rock caverns designed for underground storage of chemical energy. This type of storage can store a high amount of hydrogen, methane, natural gas, carbon dioxide or other substances. The caverns are made of concrete shells and lined with thin steel sheets to seal the content. Optimization is performed by the mixed-integer non-linear programming (MINLP) approach. The MINLP computer program GAMS/Dicopt is used. The model includes the cost objective function, which is subjected to geomechanical and design constraints. In this attempt, the topology calculation is included in the discrete optimization of the underground storage. A numerical example at the end of the paper shows the overall discrete MINLP optimization of an underground gas storage facility. The optimal discrete design with the optimal number of caverns of the storage is explicitly determined. Additional investment savings are achieved.
Databáze: OpenAIRE