Efficient direct solar-driven thermochemical energy storage of (AlMgFeMn)O CaCO3 pellets in a fluidized bed reactor

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

“…A review of the literature showed that integration between CaL and CSP is a widely investigated topic, but the effect of the FB reaction environment on the process performance still deserves investigation. When TCES conditions are used, the process is mainly studied in thermogravimetric analysers [47][48][49][50], while there are few studies in which it is assessed in fluidised bed reactors [31,34,[51][52][53]. Thus, the present study is not limited to the assessment of the deactivation of CaO in general terms, but it focuses on the specific process conditions of CaL coupled with concentrated solar radiation for energy storage.…”

“…Energies 2023, 16, x FOR PEER REVIEW 3 of 23 mainly studied in thermogravimetric analysers [49][50][51][52], while there are few studies in which it is assessed in fluidised bed reactors [31,34,[53][54][55]. Thus, the present study is not limited to the assessment of the deactivation of CaO in general terms, but it focuses on the specific process conditions of CaL coupled with concentrated solar radiation for energy storage.…”

DFT Study of the Cooperative Promotion of MgO and ZnO on CaCO3/CaO Thermochemical Heat Storage Performance of CaO

“…The utilization of renewable energy, especially solar energy, is considered to be a feasible way to solve the global warming, ecological degradation, and energy crisis. − Concentrated solar power (CSP) coupled with heat storage systems is regarded as one of the most promising technologies for the large-scale and sustainable utilization of solar energy. , Thermochemical heat storage (TCHS) technologies have been considered as the heat storage system for the next-generation CSP plants because of their wide operating temperature range, high heat storage capacities, and low heat loss. , CaCO 3 /CaO TCHS achieves the effective storage and release of solar energy through the calcium looping (CaL) (i.e., the reversible reactions of CaCO 3 calcination and CaO carbonation), as displayed in eq . With the advantages of convenient coupling with supercritical CO 2 power cycles, low feedstock prices, high heat storage density (about 3178 MJ/t theoretically), and high operating temperatures (over 800 °C), CaCO 3 /CaO TCHS is believed to be one of the most prospective TCHS technologies. , CaCO 3 ( s ) ↔ CaO ( s ) + CO 2 ( g ) 0.25em ΔH 29 8k = 178 0.25em kJ / mol …”