Thermochemical energy storage using calcium magnesium acetates under low CO2 pressure conditions

Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage

“…To overcome these limitations, the recent literature has focused on ThermoChemical Energy Storage (TCES) processes, which are based on reversible reactions with high enthalpy variation, in which the heat needed to sustain the endothermic stage is provided by solar energy, which is then accumulated in the noble form of chemical bonds. When required, the reaction products are brought together to conduct the exothermic stage, release the previously accumulated energy, regenerate the reagents, and start a new thermochemical cycle [6][7][8][9][10][11].…”

“…where, finally, the relative dielectric constants of the FB emulsion phase are obtained from the experimentally acquired values of voltage in the case a bed of calcined or carbonated material, respectively: (10) By iterating this procedure for each value of u g , it is possible to obtain the V th mix (u g ) curve represented in Figure 14. It shows that, under ideal conditions, the voltage lies in between the values obtained for the two distinct cases in the whole range of experienced superficial gas velocities.…”

Reversible sorption of carbon dioxide in Ca–Mg–Fe systems for thermochemical energy storage applications

“…12 At high temperature, the presence of inert MgO in the dolomite matrix seems to prevent sintering and pore plugging over multiple carbonations of the calcium carbonate member, although cyclic capacity diminishes over time. 13,14 Recent studies have demonstrated that the addition of Fe and Mn can enhance the cycling capacity and stability of calcium carbonate based systems. [15][16][17] Bai et al used natural dolomite precursors treated with acid and addition of Mn and Fe to form Ca/Mg : Mn : Fe composites with the aim of improving the optical absorbance for direct solar applications.…”

“…12 At high temperature, the presence of inert MgO in the dolomite matrix seems to prevent sintering and pore plugging over multiple carbonations of the calcium carbonate member, although cyclic capacity diminishes over time. 13,14…”