Triaxial cyclic compression tests with different confining pressures were conducted to explore the energy distribution characteristics of rock and their responses to
The processes of deformation and failure in rocks are unavoidably accompanied by the absorption, storage, dissipation, and release of energy. To explore energy allocation during
Underground energy storage facilities are subject to disturbances at varying strain rates during construction and operation, necessitating investigations into the effects of
Thermal energy storage is crucial in improving the utilization efficiency of intermittent renewable energy. Conventional analytical solutions to solve transient heat
Underground Hydrogen Storage (UHS) in saline aquifers and depleted gas reservoirs has the potential for long-term energy storage. However, numerous challenges and
In recent years, rock-bed thermal energy storage (TES) systems, which utilize natural rocks as storage materials, have received a great deal of interest from the scientific
Building upon our previous study that investigated the interactions between brine and impure salt rock, this study extends the understanding of salt rock behavior by examining
Considering both construction and operational costs, shallow cavern excavation in hard rock formations is a promising solution for large-scale compressed air energy storage
Luo S, Gong FQ (2020a) Linear energy storage and dissipation laws of rocks under preset angle shear conditions. Rock Mechanics and Rock
This review focuses on rock salt and underground salt caverns for energy storage. Rock salt is characterized by three unique properties: favorable rheology with a
It is widely accepted that the damage evolution of rock is driven by energy, and different types of rock have different mechanical behavior and
Moreover, rock energy storage can handle larger energy capacities, making it suitable for long-term storage compared to other methods, which may struggle with such
Most of the existing researches on energy evolution in the process of rock deformation and failure mainly revolve around a specific stage (before or after the peak).
Underground Hydrogen Storage (UHS) offers a promising solution for large-scale energy storage, yet suitable geological formations are often scarce. Unlined rock caverns
In conclusion, the linear energy storage law is a basic physical property of rock materials, and the uniaxial compression energy storage coefficient is a physical index reflecting the energy
In deep geothermal resource development, the brittleness index plays a key role in assessing the feasibility of hydraulic fracturing. However, understanding how rock brittleness
This review focuses on rock salt and underground salt caverns for energy storage. Rock salt is characterized by three unique properties:
Discover the economic and environmental benefits of rock storage solutions for landscaping and construction. Learn how using rocks like granite and soapstone for thermal
An air-rock bed thermal storage system was designed for small-scale powered generation and analyzed with computational fluid dynamics
Therefore, to ensure the safe and efficient exploitation of deep geothermal resources, it is important to understand the constitutive model of high pressure–temperature
Among samples with identical stiffness but different lithologies and sizes, little difference is seen in loading energy growth or unloading release rates, but elastic energy
The transverse temperature variations may deteriorate the performance and thereby the economic feasibility of packed-bed energy storage systems. In this paper,
In this study, triaxial cyclic loading tests were carried out on sandstone and granite at different strain amplitudes to investigate the variation of rock internal energy.
Energy storage characteristics of rocks are multifaceted, encompassing thermal, mechanical, and fluid storage factors integral to
High temperature thermal energy storage systems, in combination with bottom steam cycles, are being investigated as potential cost-effective alternatives to traditional large-scale energy
The energy evolution processes and mechanisms between three hard rocks are studied using a strain energy analysis method under true triaxial compression (TTC). Using
The term ''geologic energy storage'' describes storing excess energy in underground settings such as rock formations. Storage of energy for later use is needed to supply seasonal demand,
The investigation of rock damage behaviour is an important requirement for ensuring stability control and safety prediction in rock engineering. In this study, based on the
The combination of high temperature thermal energy storage and bottom steam cycles has recently become an object of interest as a potential cost-effective alternative to traditional ES.
The need for renewable and environmentally-friendly energy has created a necessity for effective energy storage. Hydrogen, a carbon-neutral energy car
To estimate the energy storage and release performances of rock pillars in high stress and gain insights into the prevention and control of rockburst hazards from an energy
Accurately determining the permeability of rock salt is a critical issue for the tightness assessments of salt caverns used for energy storage, which is also a hot topic in
Rocks like soapstone and granite have the potential for long-term, non-degradable heat storage. Therefore, they are perfect for thermal storage systems, especially in areas where solar or wind energy is largely dependent. In addition, the thermal energy contained in rocks can be utilised for room heating, water heating, and industrial operations.
In theory, energy storage or dissipation occurs within a rock material provided that there must be an input of energy. In other words, when the external input energy is zero, both the internal elastic energy and the dissipative energy are zero. Therefore, the point (0, 0) was added to Fig. 9 for the data fitting.
Rocks provide a creative solution to this problem due to their capacity to store thermal energy. Rock can be used as a thermal energy storage system. These systems use excess daytime electricity to heat rocks, which store the heat energy.
In conclusion, despite being perceived as immobile and unchanging, a rock has enormous potential as energy storage materials. A rock can release chemical energy, store thermal energy, or extract geothermal, all of which have the potential to be important factors in the transition to cleaner, more sustainable energy sources.
The energy is mainly stored in the form of elastic energy, resulting in a growth of dissipated energy. The internal bearing capacity of the rock increases when the confining pressure increases to 20 MPa, which in turn increases the slip and friction between particles, leading to a significant increase in the dissipated energy again.
This stored heat can be released when demand is high, which is often the case at night or on cloudy days when the renewable energy supply is low. Rocks like soapstone and granite have the potential for long-term, non-degradable heat storage.
