| Autor: |
Rhodes, Nathan R., Barde, Amey, Randhir, Kelvin, Li, Like, Hahn, David W., Mei, Renwei, Klausner, James F., AuYeung, Nick |
| Předmět: |
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| Zdroj: |
ChemSusChem; Nov2015, Vol. 8 Issue 22, p3793-3798, 6p |
| Abstrakt: |
Solar thermochemical energy storage has enormous potential for enabling cost-effective concentrated solar power (CSP). A thermochemical storage system based on a SrO/SrCO3 carbonation cycle offers the ability to store and release high temperature (≈1200 °C) heat. The energy density of SrCO3/SrO systems supported by zirconia-based sintering inhibitors was investigated for 15 cycles of exothermic carbonation at 1150 °C followed by decomposition at 1235 °C. A sample with 40 wt % of SrO supported by yttria-stabilized zirconia (YSZ) shows good energy storage stability at 1450 MJ m−3 over fifteen cycles at the same cycling temperatures. After further testing over 45 cycles, a decrease in energy storage capacity to 1260 MJ m−3 is observed during the final cycle. The decrease is due to slowing carbonation kinetics, and the original value of energy density may be obtained by lengthening the carbonation steps. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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