Solid Storage Media

A Numerical Study of Geopolymer Concrete Thermal Energy Storage: Benchmarking TES Module Design and Optimizing Thermal Performance

“…TES systems operating at temperatures in the range of 400-600 • C have a significant potential in the application of Concentrated Solar Power (CSP) plants, Solar Process Heat (SPH), and Industrial Waste Heat (IWH). To enhance the efficiency of these systems, it is necessary to identify materials with a high tolerance to such process temperatures [2,3]. The degradation of TES systems at high temperatures is a major challenge for their feasibility.…”

Simulation of an open-loop, packed-bed pumped thermal electricity storage system

“…It consists of porous solid media inside an insulated container, through which a heat transfer fluid is passed from one end to another. It has the advantage of using low-cost unstructured granular materials, such as crushed rock [2]. This also results in a very large surface area for direct heat exchange with the fluid.…”

“…a gradient between the hot and cold regions of the reservoir, which can occupy a significant portion of its axial length, and which shifts along the axis as the bed is charged and discharged. The space occupied by the thermocline, in conjunction with the operating strategy, limits the utilisation factor of the packed bed [2].…”